Overcoming stereotypes in science

I recently tweeted out a link to this Tumblr (This Is What A Scientist Looks Like) in which they post pictures of scientists in their natural habitat (complete with David Attenborough discussing their mating rituals).  I received a tweet in response to it (from @MissDSciTeacher):

which inspired this post.  What a great way to not only overcome students misconceptions about scientists but also to discuss stereotypes and cognitive biases.

Following Danielle's suggestions, have students come up with what they think a scientist looks like, acts like, or has for personality traits.  Then have them peruse the Tumblr.  At that point lead a discussion about the differences between the perceived idea of a scientist and the reality of a scientist (of course assuming their is dissonance there, which there most likely will be).

From here you can lead the discussion in what causes us to have stereotypes and why they are so difficult to get rid.  This leads perfectly into a discussion of confirmation bias, which is something that should be discussed in every science classroom (and in my opinion, every student should leave school aware of their own cognitive biases and how to correct for them).

My best practices are better than yours ...

I've been sitting on this post for a while now.  A few weeks ago, I lurked an #edchat twitter chat on defining best practices in education.  I had to stop halfway through as I think I was close to having a coronary.  I will attempt to summarize the general flow of the conversation:

1. Best practices are awesome.
2. Umm, what are best practices exactly?
3. We should find a way of sharing best practices so we all can benefit from each others ideas.
4. Maybe best practices are not global, instead there are best practices for each teacher-learner-classroom combination.
5. The moment you say a practice is best it constrains the learning.
6. We should find a way of sharing best practices so we all can benefit from each others ideas.
7. The very idea of best practices is silly as all of our practices are best, it's all relative.
8. Head asplode ....

So, I have decided to lay out my ideas on best practices in education.  I recently finished reading Sam Harris' The Moral Landscape in which he attempts to define a scientific basis for human morality (which in itself is a fascinating idea).  In it, he defines the goal of morality as maximizing the well-being of the greatest number of people possible.  He defines a spectrum that ranges from the worst possible suffering to everyone (at the bad end in case you weren't following along) and the greatest possible well-being for everyone at the top.  He then posits that we can investigate moral choices that move us either towards the worst suffering or away from it.  This can then be analysed scientifically.  

I propose a similar model for defining best practices in education.  One in which have a spectrum from the worst possible education for everyone to the best possible education.  Of course, this requires that we decide what the goal of education is (one of my largest complaints about #edchat discussions is the lack of focus towards achieving a salient goal).  If we take Dewey's stated aim of education as the 'development of reflective, creative, responsible thought' as our goal we have a starting point.  Of course we would now all need to agree as to what that meant.  However, as Harris notes we are able to work towards a goal of improving health without having a clear definition of what health is (although the seeming popularity of pseudo-medicine may show that the lack of a clear definition is fundamentally unstable).

Once we have defined a goal, we can start to measure the results of various practices and if they move us towards or away from that stated goal.  In this regard we can measure the effectiveness of practices and therefore can isolate practices that cause the greatest progress and encourage those practices while stifling the practices that are detrimental.

Note that nowhere in this exposition did I state or imply that there is only one possible best practice.  As Harris states his moral landscape can have multiple peaks on it where being on top of that peak would be the greatest possible well-being; as would being on an alternate peak.  My ideas for best practices is similar, there could be multiple peaks where we achieve the maximum possible education for all people just as there could be multiple means of scaling those peaks.

To summarize, the idea of a best practice is moot without a clear statement of purpose for education.  We need to know what the end point is to define something as being best.  A best practice would then therefore be an approach that maximizes our movement towards this goal.  Although best practices may only exist in theory, they can still exist.  As I have argued before, it all comes back to the purpose, the goal of education.

Preschoolers demonstrate scientific experimentation

I tweeted a review (Wired) of this article: Where science starts: Spontaneous experiments in preschoolers' exploratory play (1). I managed to secure a copy of the article (perk for working at a college) and just finished reviewing it and felt the need to share it with the world.

The study looked at preschoolers (mean age: 54 months) to see if they could isolate variables of a system to infer information about that system (i.e. apply the scientific method) when the probability of information gain is high. Their approach involved a toy that was activated by placing coloured beads upon it. Some of the beads would activate the machine (i.e. it would light up and play music) and some would not. The participants were divided into two groups: the all bead and the some bead conditions. In the all bead condition, the participants were shown that all the beads caused the machine to activate when applied individually. In the some bead condition, the participants were shown that some of the beads caused the machine to activate. They were then provided with two sets of beads (in pairs): one set could be pulled apart to test individually whereas the other had been glued together.

Nearly half of the children in the some beads group tested individual beads in the machine whereas only 5% (1 child) did the same in the all beads group. However in both groups the amount of play with the machine was the same (i.e. the some beads group did not use the machine more and thereby test individually through random chance). In fact, some of the children actually performed a test that the experimenters hadn't thought of; namely holding the stuck pair vertically to test it one bead at a time.

This prompted the investigators to create a second experiment where both sets of beads are stuck together. The results in this experiment were very similar to the first in that nearly half of the some bead group tested the machine by varying contact with the beads.

So what does this mean. Well, what it doesn't necessarily mean is that children are born scientists. What it does mean is that in isolated environments with limited distractions (i.e. limited variables) and limited information (i.e. high probability of information gain), preschoolers tend towards a systematic experimental approach. The authors quickly and rightly note that the current research indicates that this is not true when the systems approach real-world systems with greater complexity.

What does this mean for teachers? Well, it appears that children have an innate sense of experimentation when not overwhelmed by other task demands and there is the potential for information gain. I feel that this should be nurtured with simple experiments that are then discussed and dissected to help develop the habits of mind of successful scientists and critical thinkers. Additionally, there should be teacher led experiments that are more complicated and would overwhelm the students if done alone. This allows for the teacher to model the proper process to the students.

One conclusion that I am tempted to jump to is to bemoan the loss of this 'gift' that students are born with. However, to extrapolate this experiment and apply it to older students or adults would be wrong. I would like to see a similar experiment done with those age groups. My hypothesis is that we would see similar results. So it is not that students lose this basic innate experimental ability; it is more probable that we are not nurturing this skill and helping it grow into a viable ability.

What we need is science based education and critical thinking being taught in primary school and continuing along until high school. Additionally, we need to begin differentiating between teaching science (i.e. the subset of facts and knowledge the scientific method has garnered for us) and teaching with a science based education (i.e. learning to utilize the scientific method, rational thinking, critical thinking, and logic). As the (paraphrased) adage goes: If you teach a student some knowledge, they will know it for a day; if you teach them to think, they will learn for a lifetime.

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1. Claire Cook, Noah D. Goodman, Laura E. Schulz, Where science starts: Spontaneous experiments in preschoolers' exploratory play, Cognition, Volume 120, Issue 3, Probabilistic models of cognitive development, September 2011, Pages 341-349

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One note: the authors of the study did receive a grant from the John Templeton Foundation however, having reviewed the study (with my limited knowledge of cognitive theory) I don't see anything fishy going on.

The Damon Supremacy

I thought I would jump on the bandwagon about this clip of Matt Damon trouncing a reporter after his keynote address:



This put a huge smile on my face. His rebuttal of the inane question from the reporter was not only accurate but had enough snark to cause wincing. At approximately 10 seconds you can see his face go transition from polite question answering mode to ass kicking Jason Bourne mode.

I want to focus on the camerman's question about "Aren't 10 percent of teacher's bad". Anytime someone throws out 10% you want to be careful as it tends to indicate a made-up statistic (approximately 10% of the time). Even if 10% of teachers were bad (which I am not arguing, it could well be true) it has no bearing on punishing the teachers that are good. All professions have people that perhaps would be better doing something else; that does not imply that the skilled, productive members should be penalized. This is an example of a straw man which Damon handles beautifully by attacking the cameraman directly.

I was curious about the reporter's affiliation. Her mic indicates reason.tv so I looked them up and discovered ... libertarians ....

Teachers, Technology, Skillz, and Bieberfever: Reflections from #edchat

After participating in #edchat tonight I felt I needed to get a few things out. The topic for tonight's episode was "What amount of tech should be a requirement for every teacher to know? Are there any specific core applications for teachers?".

My first concern stems from the topic itself; its wording tacitly implies that technology is necessary to be a good teacher and therefore teachers that do not use technology cannot be good teachers. It also implies as a corollary that we must be utilizing technology in teaching. I don't think I have ever heard a solid argument as to why that must be the case. The most common arguments I hear are that "Students use technology so we must use it as well", "It makes education relevant to the student", and "It is required for a 21st century education".

The first argument is fallacious and is known as the argument from popularity (Argumentum ad populum). The basic idea is that many students use technology therefore technology should be used in education. It is a false premise because mere belief in something does not indicate it is true. Many students like listening to Justin Bieber*, it does not mean his music is worth listening to.

The second argument is also fallacious as it assumes that the combination of technology and education will maintain the relevancy that the technology provides alone:

A. Technology is relevant to students.
B. Students like things that are relevant.
C. Therefore teachers should use technology so students like education.

By accepting this argument you tacitly accept that anything that is relevant to students should improve education. Many students find Justin Bieber relevant, but it doesn't mean I am going to get Bieberfever in my science classroom*. Many students find exploring the outdoors and nature to be relevant until you require they learn about it in class. Obviously the way the lesson is taught has a great bearing on how the students will react, but that is an issue of pedagogy not technology.

The final argument implies that in the 21st century we use technology so therefore to exist in the 21st century you must know how to use technology. Once again it implies a causal relationship where there may not actually be one (and employs the logically fallacy known as affirming the consequent). The additional aspect to this argument I hear is that we must prepare students for jobs in the 21st century; jobs that do not exist yet that arise from problems we haven't stated yet. They then argue that teaching knowledge is ineffective because it will have changed by the time the students obtain these future jobs. However, the same can be said regarding the technology: it will be entirely different when the student leaves school and begins working/seeks higher education. The argument can be made that learning how to use today's technology provides a base for learning tomorrows; which I would agree with. However, that implies that learning today's knowledge provides a base for learning tomorrow's knowledge as well, which puts us back at square one. The argument also implies a teaching of technology for the sake of technology which leads me into my next concern: the lack of a clearly stated goal for teaching with technology.

It appears to me that we are integrating technology because it is there. Many mention the importance of ensuring the technology is used in accordance with proper pedagogy, a statement I couldn't agree more with. But there is so much more talk regarding how to use tech and very little regarding pedagogy that I worry that last statement is lip service to a degree. So to rectify this I will attempt to take the arguments I have listed and synthesize a goal for the integration of technology.

The main argument is preparing students for the future, so we will start there. The question that must be answered is what will the future look like. The only assumption I can start with, is that there will be people (because if there are no people, this argument is moot). So, what can we deduce if we assume that there will be people (in brackets I list the skills I believe are needed to accomplish the task/goal):

1. People will wish to communicate with each other (communication skills)
2. The communication will cause ideas to be generated and problems to be discovered (creativity and problem solving skills)
3. The problems will require solutions (creativity)
4. The solutions will require the application of new/unknown knowledge (research methodologies)
5. The solutions will require analysis (skepticism and rationality)

To me this is what needs to be taught to be ready for the future. I group these fives items (communication skills, creativity, problem solving skills, research methodologies, and skepticism and rationality) and entitle them critical thinking skills (although you could as easily call them learning skills).

Now no where in my listing I have noted technology. This implies to me (and I am biased as I created the excellent listing above) that technology is not a skill per se but a tool to be used to facilitate the execution of the skills. For example, if you needed to nail two pieces of wood together you could use a hammer or a nail gun. However, to use the tool properly I need to know why I am nailing the wood together and what the final product should look like; the technology will not show me that.

To bring the analogy to education, we can't know what tech to use until we understand the problem we are attempting to solve with our teaching. By assuming the solution will require technology we limit the number of possible solutions and stifle our creativity. The solution we arrive at may not be the most optimal or even a valid solution. Instead we need to add technology to our toolbox and utilize when the problem indicates it is required.

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* Shameless SEO plug
* I promise to stop now, that should be enough to get this post on page one of Google.

Teaching Programmers ... or Programming Teachers?

So, I've been struggling lately with deducing the best* way to teach computer programming. So far, I'm at a bit of a loss. From my exhaustively intensive Google searching, I have deduced that there is not much out there regarding teaching computer programming/science. It appears that either everyone already knows how to do it, or everyone assumes they know how to do it. Being as I've assumed that I don't know how to teach it, I'm up the proverbial creek without a paddle.

So that leaves me with the task of creating a paddle for this creek (and that is where the analogy ends before you throw me overboard **). I will begin by recounting my current approach to teaching CS and proceed from there:

1. I lead in class 'tutorial' sessions peppered with lectures. I try to keep the lecturing (i.e. directly disseminating information without the students programming) short to focus in on solving a coding problem together.

2. In terms of assessment, my courses have exams (1 if the course is under 3 weeks, 2 if longer) and projects (open ended, PBL style). I have recently started adding in assignments, which are coding problems that are laid out for the students.

3. My class runs for a 5 hour block, Monday to Friday (which is a lot of time to teach).

4. I've started adding in what I call 'Quick Checks' which are questions related to the theory of what we are covering, but unrelated to the problem we are solving (they are meant to help the students pull out the concepts being used to solve the problem).

Now that that is out of the way, here are my observations thus far:

1. It recently dawned on me that my approach of 'live-coding' is really no better than having the students copy copious amounts of notes from the board. I believed that since they were coding (and therefore doing) it was a good approach. However, I have been finding that the students are just copying the code down without applying much thought to the process. So, problem 1 is to find a way to rectify that while still covering problems that are interesting and applicable to what they will face in the job market.

2. The Quick Checks have shown me that the students have difficulty separating the logic of the solution from the scenario of the solution. I think that they see them as the same thing. This is of course highly detrimental to coding, as coding is problem solving which is the act of applying similar thinking to new problems. So problem 2 is finding a way to separate the ingredients from the recipe.

3. The open-ended projects (which are meant as a means to explore the topics covered in course and create items for their portfolio) tend to be highly derivative of the examples I do in class. I feel this reinforces my conclusion drawn in 2 that the students have difficulty separating the logic from the solution.

4. There is still a problem with the terminology we use (i.e. methods, functions, constructors, parameters versus arguments) as well as problems with writing proper syntax. Along the same thread, some students are still having trouble formatting their code neatly (which I am a huge advocate for). This makes it much harder to learn the more challenging problem solving skills as the they are still grappling with the language in which the solution is framed.

5. There is difficulty in remember what we have already completed on the current problem. This is challenging as we often try to reuse code to minimize the amount that needs to be written. However, if you don't recall what has already been done, it is difficult to reuse it or even move forward. I find this also translates into not knowing what the program should be doing when we test it.

In regards to solutions, unfortunately at this point I only have ideas. My biggest worry about implementing changes is my own bias that the changes are effective/ineffective. I need a metric to indicate if the students are actually benefiting. My thinking is something similar to the Physics based Force Concept Inventory, however I cannot find an equivalent one for CS. Since my courses are over so quickly and then we are changing topics/programming language it is difficult to use my exams as a means for assessment (although I have ideas along that thread).

So, at this point dear reader I leave you as puzzled as I am; hopeful that you are intrigued to find this solution (or at least awake). I will leave scribblings on my ideas to future posts.


* best is a fairly loose word to use here, I know ... tsk tsk

** that is the actually end of the analogy, the first was a blatant lie.

Walking the Talk

There has been a lot of chatter on the Twitter about life-long learning and how we embody that as professionals and instill the same into our students. It is very easy to say you are a life-long learner and perhaps just as easy to extol the virtues of it to your students. However, I find when trying to instill new habits, a little bit of modeling can go a long way.

If you want your students to become life-long learners you need to not only talk about it - you need to demonstrate it. Start the class with a comment like "I just found this yesterday ..." or "I just learned about this and wanted to share it ...". Show students that knowledge is not something that can be amassed and then ignored.

So, to ensure that I walk my talk I have decided to add a weekly post summarizing the best design and coding resources I have stumbled upon during that week. I normally post them to my class wiki site however things have a way of becoming buried in there.

So what do you think? Is this an idea you could adapt to your classroom? How else can you show your students the benefits of life-long learning through not just your talk but also through your actions?

An Introduction to Wordle

Note: This is an accompaniment to my article Word Clouds, Collages, and Glogs - Oh My! published in the January 2011 issue of STAO Crucible.

Wordle is a website that will allow you to create word clouds. There is no sign-up necessary (or available at all) and the site is completely free.

Upon arriving at the site you will see some of the latest creations made by users of the site. Click on Create your own (marked by red arrow) to begin your masterpiece.

You will then be prompted to paste in a block of text. Wordle will analyze the word frequencies in the text to produce the word cloud. Words that appear more frequently will appear more prominently in the cloud. Press the Go button after you have entered your text to create your Wordle.

Along the top of your Wordle you will find options that allow you to tweak the design a bit (by adjusting font, colour, word layout). However, you will find that the overall design is produced by the site and is mostly random.

When you are happy with the final product you have a couple options to preserve it for posterity. There is a Print button just underneath the Wordle. If you have the ability to print to PDF (CutePDF is free software that will allow you to do that), you could save it that way. The other option is to use the Print Screen button on your keyboard (normally located in the upper right portion of your keyboard; on some computers needs to be coupled with CTRL or FN to work). You will have a copy of your scree placed on your clipboard. You can then paste it into either a picture editor (like Microsoft Paint) or a word processor (like Microsoft Word) to edit it.

That is about it for the site. It is extremely easy to use and can be a great way to review vocabulary for a unit. One last item to mention would be the advanced options (available from the menu bar at the top of the site). Here you can enter words with a numerical weighting. Words with a larger weighting will appear larger in the Wordle.

Finally, a Wordle I created with the text of this article (a meta-Wordle perhaps?).

Reading Dewey: The Introduction

So, I've decided to read my way through John Dewey's essays. I have quoted him a lot in a variety of my ed work and on Twitter but have never read anything by him. So, I've decided to rectify that.
I will be reading my way through:
John Dewey on Education, Selected Writings
Edited by Reginald D. Archambault
University of Chicago Edition 1974
ISBN: 0-226-14390-2

So, here goes my thoughts, reflections, and critiques (well probably no critiques as these ideas are amazing and I'm not learned enough to critique them) on the Introduction (by Reginald D. Archambault <- which is an amazing name):

It is commonplace that everyone talks about Dewey and no one reads him.
~ Preface

According to Archambault, Dewey's philosophy of education is based on his philosophy of science. He was a strong skeptic and scientist who believed that the scientific method could be applied to pretty much anything and should definitely be applied to education. This to me is a breath of (old) fresh air. I am a skeptic and scientists myself and believe that those two items (coupled with critical thought) form the basis of education.
Dewey felt the aim of education was the 'development of reflective, creative, responsible thought' (p. xviii). This is a well stated, succinct purpose for education. With this goal in mind, students will be able to a) teach themselves b) critique what they are shown and c) further their own growth through self-reflection.

Although perhaps not in the sphere of educational philosophy but still interesting (as a skeptic), Dewey felt that morals should belong within the world of facts, not distinct from it. As the act of valuing is susceptible to the scientific method.
Back on education, he felt that the ends of education are not a fixed point. For to be fixed is to have 'rigid, habitual forms of behaviour [that] can lead only to stagnation' (p. xx). Instead the goals of education must shift in relation to the changing environment and changes in society. It is a common question in the Twitterverse about the goals of education. Dewey I feel would argue that that is not a good question as in his mind, the goals must be stated in terms of processes (i.e. the promotion of reflective thought not reflective thought). This means that education is the end goal in itself. He felt that a major aim of education was to help students become morally responsible so they can, as adults, create new societal rules and become autonomous. To achieve this end, Dewey argues that the desires of the student must be heard, addressed, and acted upon where reasonable. In essence, he is arguing for more student control in their learning.

Back on the subject of ends, Dewey believed that if the end goals are to be meaningful they must be defined 'in terms of the means which would be used in their attainment' (p. xxiii). Dewey argued against vaguely stated goals for education (such as 'freedom' or 'wisdom' or 'the full development of the child') as in his mind they were stated as ends within themselves and precluded the notion of a means of attaining them.

Dewey also fought against traditional (and popular) methods of instruction that he called 'assign-study-recite' (p. xxiii). He felt that the justification for these methods was faulty: the belief in a Tabula Rasa state and the idea of a child as a passive receiver of information. Instead he argued for a method of instruction that focused on the 'live, meaningful, and important problem to be grappled with and solved' (p. xxv). This to me indicates a form of PBL, an active integration of content with the student's interests in a way that supports learning and does not stifle it.
He also argued against the idea of separating learning into distinct subjects. He felt this caused the subject to be viewed as an unchanging collection of facts to be learned either through 'classroom management' or by applying a sugar-coating to the material to make it more palatable. In relating this back to his ideas of ends and means, he deduces that this method of instruction actually prevented the achievement of its own aim (the absorption of the distilled subject knowledge) by promoting a hatred of the subject by preventing an open and free exploration of the subject. Instead the knowledge is not the driving force of education, it must be subservient to the purpose and method of instruction. Knowledge should not be presented based on the ideas of tradition but instead organized and structured based on its relevance to the problem at hand. I have created some illustrations to illustrate this.Whereas Dewey's approach would look more like this:Dewey argues that content must be defined in terms of the relationship between the teacher and the student and must not be the end in itself. The end is the application of content to a real problem thus proving the means for synthesis of the learning.

In Dewey's mind the teacher's role is not to disseminate of content but is instead tasked with 'prompting the development of ideas in the pupil' (p. xxvii). The teacher's role becomes one of helping the student to develop relations and connections and their own ideas. To accomplish this the teacher must be foremost a learner, armed with a broad general knowledge but based on a sound grounding of educational theory; especially the relationship between theory and practice.

The introduction ends with a quote from Dewey:

If we are willing to conceive of education as the process of forming fundamental dispositions, intellectual and emotional, toward nature and fellow men, philosophy may even be defined as the general theory of education.

The editor concludes with a statement that in order to understand Dewey's thoughts on education, you must first understand his total philosophy. Let the education begin ...

Reflections on Project Based Learning

Well, my first course with the Web Design crew is finishing as I write this post (they are writing their exam so I felt I should write something to). I wanted to post a few thoughts I had regarding project based learning.

First, some context. The course is on Database Design. If you haven't closed your browser window yet, thank you. Their project involved creating a database of their own choosing (i.e. to store their own data). I have 13 students who all chose to model 13 different things including: music libraries, web design client tracking, movies, TV shows, a room booking system, ski team participant tracking and more. The course ran for 4 weeks, 5 hours a day, 5 days a week (I know, seems like the ironman/woman of courses).

My rationale in allowing students to create a database of their own choosing is it allows them the freedom to model data they understand. One of the challenges facing a database designer is understanding the client's data, the relationships it has with other data, and their requirements for processing/viewing the data. If I allow students to model their own data, I effectively remove that roadblock from their learning allowing them to focus on learning the language and art (yes, there is art in database design) of designing databases. Had I assigned them a 'canned' database to design, they would not only have to learn how to design a database but also have to wrap their heads around data that is not their own. That is two strikes too many in my books.

I provide a basic outline of what I want (divided into phases and then a final submission to help them stay on track - description can be seen here). I try to make each phase as open as possible.

Now some reflections:

1. I find students have reservations about starting a PBL task. I think this comes from the fact that I am not providing them with everything they need to begin. I am asking them to fill in the details. However, once the ball gets rolling, I find students begin to go above and beyond the project requirements and become very invested in their databases.


2. I attempted to restrict the students too much by forcing them to create certain items for their databases. My issue was I wanted them to do everything we discussed in class to 'try it out'. However, it ended becoming an academic exercise as they tried to create solutions for my requirements that fit their databases. This violated the purpose of the project as I laid it out for my students: to apply their learning to a real-world context. In their second project, I tried to relax the restraints and allow students the flexibility of choosing what they wanted to implement. This of course means some students will not be able to do all the of the items I teach, which I know is fine in one part of my brain. However, another part is having a bit of a tough time letting go of the idea that everything that is taught must be used.


3. Next time I will stop grading the intermediate phase submissions. I think the allocation of a grade here may be preventing students from completely digesting the copious amounts of feedback I include. Instead, I will only provide a grade on the final submission (part of the requirements for the final submission is to apply the feedback given in the phases). I am currently pondering some sort of level system (On Track, Not On Track) but I worry that that is no better than a grade. I think I may go cold turkey and not provide any sort of numerical/psuedo-numerical label and only provide written feedback/suggestions.

Overall, I am pleased with how the PBL approach worked out in my class and I believe that the students were also. I personally feel that a PBL approach is a perfect fit for Computer Science as it allows for immediate application of the learning in a context that is known and safe for the student.

Don't - Redux

Don't teach me how to use Twitter,
     Teach me how to express my ideas succiently.

Don't teach me how to make a Prezi,
     Teach me how to speak in public.

Don't teach me blog,
     Teach me to have ideas worth expressing.

Don't teach me how to Google,
     Teach me how to have good questions.

Don't teach me how to create videos,
     Teach me to how to see the beauty in the world.

Don't teach me how to make word art,
     Teach me how to appreciate the power of language.

Don't teach me how to use an eReader,
    Teach me how to love reading.

Don't teach me how to use social media,
     Teach me how to collaborate.

Don't teach me how to consume content,
     Teach me how to think critically.

Don't teach me how to use technology,
     Teach me how to be human.

Feedback: It's a two-way street you know

I've been thinking a lot about feedback and the one-way nature of it in education. Wikipedia defines feedback this way:

Feedback describes the situation when output from (or information about the result of) an event or phenomenon in the past will influence an occurrence or occurrences of the same (i.e. same defined) event / phenomenon (or the continuation / development of the original phenomenon) in the present or future.

In many classes, feedback is a one way process: the instructor provides feedback to the student. Typically the student is only granted the ability to provide feedback on the instructor or the course once (at or near the end of the course). This feedback is then not provided to the instructor until after the course has finished. This implies (based on our definition above) that the feedback can not be used to alter the present state of the course that the students are in. This implies an altruistic impetus to the student to even provide feedback (i.e. I will provide feedback not to improve my own state, but to improve the state of future students). I know in my own experience as a student (anecdotal of course, but illustrative) that I only ever filled in the multiple choice part of a end-of-course evaluation unless I was extremely pleased or displeased with the instructor. In addition, by the time the end of term was rolling around, I had forgotten much of the feedback that I had wanted to share.

Looking at it from the other end, this lack of feedback for teachers tends to reinforce the stereotype that teachers are an irreproachable source of knowledge. Stereotypes tend to be more damaging to the one that is being stereotyped that the one perpetrating them. This lack of constructive, useful, timely feedback encourages teachers to accept and embody this omniscient stereotype, and thus not to attempt to become better. Yes, teachers can self-critique and self-reflect upon their own practice (and they should) and change that way. But the system of not permitting feedback for the teacher does not encourage (and in fact discourages) this self-reflection from taking place; in fact it negates any form of reflection of the teacher upon thier teaching practice. It discourages the teacher from changing; what change could be needed by someone that is perfect? By tacitly neglecting feedback, we tacitly accept the idea that we are beyond change and beyond growth; we tacitly accept the idea that we are not learners as we have nothing to learn.

How do we rectify this disparity in our feedback model. The solution is rather simple: do not wait for the prescribed feedback form to come around; be proactive. The exit card strategy is an excellent means of gaining feedback on the lesson from students:

At the end of each class, students are provided a cue card. Upon the cue card they are asked to record the following: One positive item from the lesson, one piece of constructive criticism, and one thing that is interesting (in essence a form of a PMI). Students should be encouraged to do this every class, and to discuss anything they wish. It should also be anonymous.

In my experience, this must be encouraged every class because as students we are very used to having no voice in how we are taught. This idea is not easily dispelled.

It is vital that constructive criticism is acted upon swiftly. Students will realize very quickly if this is a 'sham' when their ideas are not implemented or discussed. Actively discuss the suggestions in class and your feelings on their efficacy.

As I teach in a computer lab, I have digitized my exit card strategy. I use Google Docs to host a form on my course website. The results from the form are dumped into a spreadsheet (think Excel) for me to process. The link to the form is kept on the website and I provide 5 minutes most classes (as I can be forgetful) for students to submit feedback. Here is a sample form for that purpose.

The speed at which I can adjust the flow of the course is empowering. I benefit as a teacher by knowing that my students are understanding my (and our) ideas for the course. I can also gain valuable insights into how my assumptions on how to teach this class may not match the needs of this class. Perhaps more importantly, it shows my students that I am not perfect; that I am growning and learning alongside them; that I make mistakes. But, most importantly, it illustrates those same points to me.

Sample Forms:
General Feedback Form
Exam Feedback Form

Reflections from Summer Institute for CS Educators

I presented two talks today at the Summer Institute for CS Educators here in Waterloo. The first was on The Effective Use of PowerPoint and the second was about Teaching Programming Through Game Design. I'm just going to jot down a few notes and reflections mainly for myself; if anyone finds them useful that is a bonus.

Effective Use of PowerPoint

I was very pleased with how this went, it could not have gone better. I really slimmed down my presentation from when I gave this talk as a student at Trent. That reductionist approach seemed to be the spark that led to an engaging conversation during the talk. I did not have time to get to the group activity of having the participants 'makeover' some slides I had brought in, but I don't think that was needed. The conversation we had was fascinating. I'm going to attempt to summarize some of the key points that I remember:

• Too much text leads to us serving PowerPoint during the presentation. We need to ensure that PowerPoint is working for us.
• Sometimes the best usage of PowerPoint is to not use it at all.
• Allowing our students to use PowerPoint as a crutch (i.e. by having a text laden presentation that they read) may be great scaffolding to help them get over their fear of public speaking. We just need to remember to remove the scaffolding.
• Tell your students to 'think graphically' about their presentation.

For next time, I would like to have attendees email me some slides prior to the presentation so I can have time to adjust them and we can discuss the changes during the presentation.

Teaching Programming Through Game Development

I felt a bit hectic in this presentation. It was a difficult arrangement as I was planning on working through a few demos with both Python and XNA, but when I got there I realized that would probably not work due to the differing comfort level with the languages.

Overall I was pleased with this presentation as well. I think for next time I would allow time for brainstorming of ideas of games students can program. Also a focus on how to use gaming to bring in the groups of students not typically represented in CS (i.e. anyone non-white male). I would also go through more of my assignments looking more at the idea of them as opposed to the code. Perhaps a bit more detail on how to develop games in a few other languages (like Java or C++) would be helpful

Feedback

At this moment, I have received approximatly 10 submissions to my feedback form (had roughly 15 in the PPT session and 30-35 in the Game Dev session). The majority of the feedback is for the Game Dev session (I'm assuming that is because we were in the computer lab so they were able to fill the form out right then). Some highlights for changes for future presentations:

• Show games in Java and C
• More discussion of simple game ideas (as opposed to the graphical games I'm assuming)
• Less lecture up front, get to the hands on portion ASAP
• Time to code in XNA (this one is tricky as XNA has a steeper learning curve)
• Examples that we can work with that allow us to develop parts of the program or improve it (once again, tricky as it implies a working knowledge of the language. Could have a Python example, Java example, C++ example and have them break off into teams. Would have to brush on my Java ...)
• Have a break (PPT session) and do some sort of group activity (I agree, I had the idea for the makeover at the end and ran out of time. Perhaps moving that forward)

Overall, I am very pleased that I decided to do both presentations. Next stop .... STAO!

Tech Tuesday: Create a Google Doc Form

Ok, I've decided to start a Tech Tuesday portion of the blog. One of my professors at Trent told me about her PD she runs at her school on Tuesdays for 1 hour after school educating teachers on the uses of technology. Since I don't have a school, I figured I would start with the blog.

So, today I want to discuss using Google Docs to create a form/quiz/information gather that also has a chart display for the results. This was definitly the show stealer at my recent OAPT presentation. So, here goes.

1. Get a Google Account. Visit Google and click on Sign In in the upper right corner. On the next page choose Create an Account Now. Your new Google Account gives you access to GMail, Google Docs, Google Reader, and Google Calender to name a few.

2. Click on Google Docs in the upper left (may be under More).

3. In Google Docs, click on Create New and select Spreadsheet. A new window will open. Click Form -> Create a Form. Create the form you are interested in (quiz, introduction form, feedback form). For the purposes of these directions, you will need to create questions that have distinct answers (T/F, MC, likert-style).

4. Back in your spreadsheet (which should now have your questions as column headings), click on New Sheet in the bottom left. This new sheet will be used to tally the results from your form. For this example, I am assuming that you created likert-style questions with a 5 point scale (this works best when all the questions have the same style and scale).

5. The values in row 1 should be the questions from your form (or abbreviated versions of them). The questions should start at B1. In the first column (starting in A2) start the scale for your question.


6. Now, we need to add in some formulas to count the responses. For example, in B2 I add a formula that counts all of the responses to the first question that were 1 (this example assumes you renamed the sheet that stores the data from the form as RawData).

=COUNTIF(RawData!B$2:B$103, $A2)

The COUNTIF function will count the data in the range (the first thing in the brackets) only if the value is equal to the second thing in the brackets. The RawData!B$2:B$103 is the range that the function looks over, cells B2 through B103 (this would allow for 102 responses) in the RawData sheet. The $ in front of the number ensures that the numbers do not change when we fill the equation down. The $A2 refers to the 1 placed in that cell, which is the value we want to count.

7. Fill the equation down by clicking the blue square in the corner of the cell highlight box and dragging down. Repeat for the remainder of your questions (by filling across).

8. Now we need to build a chart for our data. Start by selecting all of the data in the new sheet you have just finished making. Select Insert -> Chart to open the chart wizard. Set the Group Data by option to Columns, and ensure that both Use row 1 as labels and Use column A as labels are checked. Click save chart.



9. The chart will appear in the current sheet. Right-click the chart and select Move to own sheet.

10. Now you just need data to be processed into your beautiful chart. Click the Form option in the tool bar and choose Go to live form. This is the page that you can send to the people who you would like to fill out the form. Just copy the web address (the http://spreadsheets.google.com/... bit at the top of your web browser), and send it to your students. They do not need to log in and they do not need a Google Account to fill out the form. In fact anyone who knows the web address can fill out the form.

And that is that, you are now the proud owner of a GoogleDocs hosted spreadsheet creating form that has a nice chart to boot. I have opened the sample form I used for the screen shots, so you can access it through your Google Account. You can access the sample here.

Happy Googling!

On Jack Johnson, Trains and Curriculum ...

I was listening to Jack Johnson's excellent album In Between Dreams today when his song Breakdown came on. Here is an except of the lyrics for those who have not heard this song (which ranks as one of my favourite songs of all time):

I hope this old train breaks down
Then I could take a walk around
And, see what there is to see
And time is just a melody
All the people in the street
Walk as fast as their feet can take them
I just roll through town
And though my windows got a view
The frame I'm looking through
Seems to have no concern for now

When I first heard this album I was living in Cape Town, South Africa working as a waiter at a Mexican Restaurant (I know, it makes no sense). I listened to this song a lot as I was backpacking around Southern Africa and it resonated with my wish to get out of the bus I was in to explore everything that was rushing by me. But the bus kept going ...

Today, it hit me an entirely different way. I was thinking about all the times in school when we are exploring a curriculum mandated topic and the students and teacher would love to stop the curriculum train to explore the current topic. But the train keeps going ...

It seems to me that our current model of education views curriculum as the train; it drives education. This model may be preferred by some as it removes much of the control from the individual teachers, who may choose to teach different topics. However, what it fails to do is to allow for exploration, to permit creativity and to generate passion about the topics. We have a set time to explore a topic, and whether or not we want to move on, we must when the time is up (or we need to dredge through 3 more weeks on a topic no one cares about).

What if we instead switched our model and made the curriculum the track and allowed the teachers to control the train. We would all have a set path to follow, but we would be allowed to stop and gawk when it was appropriate. Or to speed on through when the scenery wasn't to the groups liking. We could even stop the train in the station for a day or so and go on a walkabout; exploring that stop in more detail because our students wanted to.

Imagine that, no longer needing to view the curriculum just through our window frame which, according to Jack Johnson, "seems to have no concern for now", but instead getting out of the train and seeing things unobstructed, freely, and without restraint.

Where are the Students?

While wandering through the woods today:

I saw the deer and thought this is Biology.
I saw the different biomes and thought this is Geography.
I saw the roots of the upturned trees and thought this is History.
I saw chickadees flying through the air and thought this is Physics.
I heard the animals chattering around me and thought this is Music.
I saw the marsh grasses purifying the water and thought this is Chemistry.
I felt the perfection of nature and thought this is Math.
I saw the beauty around me and thought this is Art.
I felt connections to everything around me and thought this is Philosophy.
I felt these words flow through me and thought this is English.

Then I saw that I was alone,

And I thought, where are the students?

What did you learn in school today?

I learned that knowledge is static.
I learned that I have no hope of learning on my own, knowledge must come from my teacher.
I learned that learning is best done quietly and in rows.
I learned that fun has no place in life.
I learned that I am not smart enough to learn on my own.
I learned that conformity is valued more than creativity.
I learned that my opinion and ideas are worthless.
I learned that my greatest achievement will be a test score.

What did you teach your students today?

The beginnings of #scisat

So, I had another idea (which I have apparently followed through with ... go me!). I am a huge fan of science laboratories that are open-ended and allow for students to learn important soft skills such as observation, note-taking, hypothesising, problem solving and communication. Personally, I don't care much for labs where a 'correct' answer must be found. In school, I usually reversed engineered them to solve for the answer and add in some experimental error to make it look better.

So, on to the idea. The creation of #scisat. Every Saturday (or Sunday, or apparently Friday as I posted early ... Maple Syrup Festival tomorrow and all) I will post a science idea that helps to foster the skills I listed above. Anything is fair game from labs to demos and journal ling to technology.

If you like the idea and the inaugural posting Spicy Spicy Science, let people know. Let's start #scisat as the way of communicating our ideas with each other. Let's bring science back (hmm, I smell a song ... is Justin Timberlake on twitter?)

Science Saturday: Spicy Spicy Science

So, I like hot food. I like science. Why not combine them together? I was listening to Tom Allen on CBC Radio 2 Shift today (apparently, he provides me with much insight) discuss the Scoville Unit and determining the heat of peppers. Then I got to thinking about converting it into a science lab. Here we go:


So, Wilbur Scoville designed this scale in 1912 to determine and compare the pungency of peppers. This is defined by the amount of capsaicin contained within the pepper. His test, known as the Scoville Organoleptic Test, involves soaking dried peppers in alcohol (capsaicin is alcohol-soluble) and determining by how much it must be diluted with sugar water until it is undetectable to taste. So a pepper with a rating of 2000 Scoville Units must be diluted over 2000 times (its original volume) to render it unpercetable by human taste.

How does this apply to the science classroom? Well, this makes a fantastic open ended science lab that can cover important topics such as: experimental error, subjectivity of methodology, issues with perception, observation and experimental design.

My idea is to provide students with the background information presented above. Have them design an appropriate experiment to determine the Scoville Rating of an unknown sample. Provide each student group with a different sample (I would recommend nothing too hot as it can burn eyes and mucous membranes) and let them run their experiment. Students should have the opportunity to present and discuss the different methodologies chosen by their peers.

Of course, the one outstanding question on your mind is: you want me to have students drink alcohol? Well, it is unfortunate that capsaicin is not water soluble, but it is fat and oil soluble so I would recommend using vegetable/olive oil instead of alcohol in class.

Finally, here is how Scoville did it. He had a minimum of five tasters who were allowed to taste only once per session to prevent prior tastings from influencing their decisions. Because of the subjectivity of the testing, today we test through liquid chromatography.


One more extension is to discuss why drinking water after eating food spiced with capsaicin doesn't work (it is not water soluble). Whereas the drink of choice, beer, has a mild amount of alcohol which can alleviate the burning sensation. The alternative drink, milk, has a compound casein (which is lipophilic or fat-loving) that surrounds the fatty capsaicin molecules and washes them away.

This is a easy to run lab which should provide ample opportunities for students to explore the scientific method while having a bit (or heaps) of fun.

More information on Scoville, capsaicin and peppers:
Wikipedia
Chile Pepper Scoville Scale
The chemistry of capiscum

Top 100 Education Books

Well, I've been sitting on this idea for a bit now and I think it is time to unleash it. I was scouring the net for some amazing way of implementing it, but I can't find anything that doesn't require me to host a web site myself. So, without further ado ...

My idea is to have teachers collaborate and generate the Top 100 Education Books that aspiring, new, and current teachers should read to improve and inform their practice (with thanks to Tom Allen at CBC Radio 2 Shift for the inspiration). This of course is a unending project as new ideas are introduced and new literature produced.

This will be hosted at the shift-ED wiki site and should be ready to be unleashed in its entirety shortly. So, get pondering and get ready to produce the greatest list ever produced (that references books about education).