Archive for the ‘SoTL’ Category

Giving up Calculation by Hand


This is scary stuff for math professors, but with the arrival of amazing programs like Wolfram Alpha, we’re going to have to start paying attention to the signs of change.  I talked to Conrad Wolfram (at Wolfram Alpha Homework Day) when he was still formulating what he wanted to say at this TED Talk.  I think it’s worth 18 minutes of your time to watch Teaching kids real math with computers.

Here’s an outline of the Conrad Wolfram’s argument (which I am paraphrasing/quoting here):

What’s the point of teaching people math?

  1. Technical jobs (critical to the development of our economies)
  2. Everyday living (e.g. figuring out mortgage, being skeptical of government statistics)
  3. Logical mind training / logical thinking (math is a great way to learn logic)

What IS math?

  1. Posing the right questions.
  2. Convert from real world to mathematical formulation
  3. Computation
  4. Convert from mathematical formulation BACK to real world

The problem? In math education, we’re spending about 80% of the time teaching students to do step 3 by hand.

Math is not equal to calculating, math is a much broader subject than calculating.  In fact, math has been liberated from calculating.

Should we have to “Get the basics first”?  Are the “basics” of driving a car learning how to service or design the car?  Are the “basics” of writing learning how to sharpen a quill?

People confuse the order of the invention of the tools with the order in which they should use them in teaching. Just because paper was invented before computers, it doesn’t necessarily mean you get more to the basics of the subject by using paper instead of a computer to teach mathematics.

What about this idea that “Computer dumb math down” … that somehow, if you use a computer, it’s all mindless button-pushing.  But if you do it by hand it’s all intellectual.  This one kind of annoys me, I must say.  Do we really believe that the math that most people are actually doing in school practically today is more than applying procedures to problems they don’t really understand for reasons they don’t get? … What’s worse … what they’re learning there isn’t even practically useful anymore.  It might have been 50 years ago, but it isn’t anymore.  When they’re out of education, they do it on a computer.

Understanding procedures and processes IS important. But there’s a fantastic way to do that in the modern world … it’s called programming.

We have a unique opportunity to make math both more practical and more conceptual simultaneously.

Personally, I’m all for it.  But how?  That’s the question.  How to shift and incredibly complex and interconnected system of education? How to train tens of thousands of teachers and faculty to teach a new curriculum that they themselves never learned?  Hmmm … it seems that we might need some help, maybe a new paradigm for education itself.  It’s coming.

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Measuring Teaching and Learning in Mathematics


This weekend at AMATYC I presented this Prezi presentation on How can we measure teaching and learning in math? My husband was kind enough to act as the videographer for the presentation, and so I can also share the video presentation with you today.

I think the video should add quite a bit of context to the presentation, so I hope you’ll take the time to watch it.  What I propose (at the end) is a research solution that would help all of the math instructors in the country (who want to) participate in one massive data collection and data mining project to determine what actually works to improve learning outcomes.

If you have any suggestions for where to go from here, I’d be happy to hear them.

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Random But Organized Thoughts (8-29-2010)


Data Visualization and Mining

Great Links for STEM

Just for Fun

Great Links for Everyone

Serious Games

In other news, our Math ELITEs are ready to be used!  Here’s a picture of the new tables.  Also, my husband and I spent our 15th Wedding Anniversary sitting in front of a large screen TV (with no reception … not watching it) and watching TED Talks on a 3″ phone screen.  It was a great way to celebrate!  Also, I booked my trip to Mountain View for September. Can’t wait!

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Random But Organized Thoughts (8-22-2010)


For STEM educators

Other great stuff

  • If you like geeky cartoons, you have to check out Geek&Poke!
  • Teachers Without Technology Strike Back [via @jryoung] offers more on the digital divide when it comes to, technology and teaching. Let’s hope this professor doesn’t really see himself as the center of all knowledge in the classroom. [thanks @ppezzelle for pointing that out about the photo]
  • Very interesting analysis of Los Angeles teacher data: Year after year, some teachers’ students make great strides and some do not.  Who’s teaching LA’s kids? is intriguing. Ask yourself what you’d do if you discovered your classes were falling behind the rest?
  • Another interesting study finds that children who are younger than their classmates are more likely to be diagnosed with ADHD.  It’s likely that we’re often confusing ADHD with simple immaturity. [via @courosa]
  • It turns out that Android users use even more data than iPhone users! We may all end up with our bandwidth usage capped (let’s hope there’s always an option to pay for unlimited bandwidth for those of us without landline broadband at home). [via @hybridkris]
  • A few folks on twitter were asking me about a cheap and portable data projector.  Here’s one for $300 that should do the trick (although, for the record I have not tried it myself).
  • TIP: You should always download the flash version of any Prezi you plan to give as an in-person presentation.  First, once you’re duplicating your browser on another screen there are glitches in the Prezi browsing.  Second, there are still too many random down times on Prezi to take the chance that it happens during your presentation time.  Be safe: Download the flash files (free).
  • NPR takes on the Beloit College “Mindset List” that is published annually, and they make some good points. [via @academicdave]
  • Wired magazine has an eyecatching headline this month (big surprise): The Web Is Dead. Long Live the Internet.  It’s not that we’re less digital, it’s that we’re accessing the web more through applications than direct visits.  They have a great visual, which should make it worth the click. [via @eLearningGuild]
  • The Face-to-face Lecture: Only Accidentally Valuable? is a great blog post by @erekbruff in response to reading Cognitive Surplus.  He poses the question: Are there activities in which higher education faculty engage that seem inherently valuable that are only accidentally valuable?
  • Designing for the Mind by Francisco InChauste [via @oxala75]

Serious Games

  1. Appointment  dynamic: a dynamic in which to succeed, one must return at a predefined time to take a predetermined action (i.e. Happy Hour, Farmville,
  2. Influence and status: the ability of one player to modify the behavior of another’s actions through social pressure (i.e. Gold Medallion vs. Silver Medallion on Delta, report cards, Valedictorian)
  3. Progression dynamic: a dynamic in which success is granularly displayed and measured through the process of completing itemized tasks (i.e. progress bars like on LinkedIn, World of Warcraft)
  4. Communal discovery: a dynamic wherein an entire community is rallied to work together to solve a challenge (i.e. Digg, DARPA Balloon Challenge)

Great quotes

  • “What looks like laziness is often exhaustion – change simply wears people out” -Dan Heath, from Why Change Is So Hard: Because Self-Control is Exhaustible (a video about why self-control is so hard, from Fast Company)
  • “I don’t take attendance and don’t collect homework but I don’t think you can do well without it.” quoted from @DrTimony‘s favorite professor, who started the course with this statement.
  • Why we shouldn’t restrict/ban Internet in schools: “We TEACH kids how to cross the street, we don’t ban cars!” – Jamie from #mcsli10 [via @logicwing]
  • “It’s just a matter of time before Facebook becomes like Amazon: You went out with ____, you might also like ____.” from @jackscholfield
  • This just made me giggle: “Since when are higher ed institutions a beacon for innovative pedagogy?” [from @mctownsley]
  • “With seven game dynamics you can get anyone to do anything.” - Seth Priebatsch (from his TED Talk at TEDxBoston)  Also: “School is a game. It’s just not a terribly well-designed game.”

Events

In other news, I cancelled my Kindle order because I got used to reading books on my HTC EVO (Android) and the screen sizes are not so different between the 6″ Kindle and the EVO.  I invested in a souped-up battery which should give my EVO 24 hours or more of battery life.  I’m still reading Kindle books, just not waiting for a Kindle device.

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Student Conceptions of Mathematics


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Do you ever get the feeling that you’re not making any real progress with your students?  Sure, they pass tests and progress through the courses (well, most of them), but have you ever just had the uneasy feeling that they really don’t get what math is all about?  Suppose you were to ask your students the following question:

Think about the math that you’ve done so far.  What do you think mathematics is?

What do you think they would tell you?

Well, in 1994, a research group from Australia did ask 300 first-year university students this question (Crawford, Gordon, Nicholas, and Prosser).  They identified patterns in the responses, and classified all 300 responses into categories of conceptions in order to explore the relationships between (a) conceptions of mathematics, (b) approaches to learning mathematics, and (c) achievement.

If you want all the gory details about the study, you’ll have to track down the journal article, but let me attempt to summarize their findings.

Students’ conceptions of mathematics fell into one of five categories (Crawford et al., 1994, p. 335):

  1. Math is numbers, rules, and formulas.
  2. Math is numbers, rules, and formulas which can be applied to solve problems.
  3. Math is a complex logical system; a way of thinking.
  4. Math is a complex logical system which can be used to solve complex problems.
  5. Math is a complex logical system which can be used to solve complex problems and provides new insights used for understanding the world.

The first two categories represent a student view of mathematics that is termed “fragmented” while the last three categories present a more “cohesive” view of mathematics.  Note that the terms fragmented and cohesive are well-used throughout the international body research.  The categories above, as you may have noticed, form a hierarchical list, with each one building on the one above it.

Here’s where this study gets (even more) interesting.  The researchers also asked students about how they studied (changing the language slightly here to “americanize it” a bit):

Think about some math you understood really well. How did you go about studying that?  (It may help you to compare how you studied this with something you feel you didn’t fully understand.) How do you usually go about learning math?

Again, the researchers went through a meticulous process of categorization and came up with five categories (Crawford et al., 1994, p. 337):

  1. Learning by rote memorization, with an intention to reproduce knowledge and procedures.
  2. Learning by doing lots of examples, with an intention to reproduce knowledge and procedures.
  3. Learning by doing lots of examples with an intention of gaining a relational understanding of the theory and concepts.
  4. Learning by doing difficult problems, with an intention of gaining a relational understanding of the entire theory, and seeing its relationship with existing knowledge.
  5. Learning with the intention of gaining a relational understanding of the theory and looking for situations where the theory will apply.

Again, these five categories were grouped, this time according to intention, into two general categories: reproduction and understanding.  In the first two approaches to learning math, students simply try to reproduce the math using rote memorization and by doing lots of examples.  In the last three categories, students do try to understand the math, by doing examples, by doing difficult problems, and by applying theory.  Other researchers in this community have seen similar results on both general surveys of student learning and on subject-specific surveys and have termed this to be surface approach and deep approach to learning (see Marton, 1988).

Still reading?  Good.  Remember my first question? Do you ever get the feeling that you’re not making any real progress with your students? Let’s answer that now.

Here’s how the conceptions of math and the approaches to learning math correlated in this study (Crawford et al., p. 341):

conceptions_of_math

Did you catch that?  Look at how strongly conception and approach correlates.  It’s probably what you’ve always suspected, deep down inside, … but there’s the cold, hard, proof.

Of course, all this is not so meaningful unless there’s a correlation with achievement.  At the end of their first year, the students’ final exam scores were compared to the conceptions and approaches to mathematics (again, for technical details, get the article). The researchers made two statistically significant findings:

  1. Students with a cohesive conception of math tended to achieve at a higher level (p < .05).
  2. Students with a deep approach to learning math tended to achieve at a higher level (p < .01).

Okay, so where does this leave us?  Well, we don’t have causation, only correlation (at least, that’s all we have from the 1994 study).  However, Crawford, Gordon, Nicholas, and Prosser were nice enough to use their research to develop a survey inventory that we can use to measure students’ conceptions of mathematics (1998).  The 19-item inventory (5-point Likert scales) has been thoroughly tested for validity and reliability, and can be found in their 1998 paper, University mathematics students’ conceptions of Mathematics (p. 91).

Suppose you want to try something innovative in your math class, but you don’t know how to tell if it works.  You could, at the very least, try to measure a positive change on your students’ conceptions of math (there are other ways to measure the approach to learning, but this is already a long blog post and you’ll have to either wait for another week, or view my presentation How can we measure teaching and learning in math?).

measure_tlm

To give the Conceptions of Mathematics Questionnaire (CMQ) would take approximately 10 minutes of class time (you should ask for permission from Michael Prosser before you launch into any potentially publishable research).  This would give a baseline of whether students’ conceptions are fragmented or cohesive.   If you were to give the survey again, at the end of the semester, you would be able to see if there is any significant gain in cohesive conceptions (or loss of fragmented conceptions).

So, I have permission (I met Michael Prosser this summer when he was at a conference in the U.S.), and I’m going to use this in all my classes starting next week.  I figure that when I start to see major differences on those pre and post-semester CMQ inventories, that I’m doing something right.  If I’m not seeing any gain in cohesive understanding of mathematics, then I’m going to keep changing my instructional practices until I do.

Papers that you will want to find (and read!):

Crawford, K., Gordon, S., Nicholas, J., & Prosser, M. (1994). Conceptions of Mathematics and how it is learned: The perspectives of students entering University. Learning and Instruction, 4, 331-345.

Crawford, K., Gordon, S., Nicholas, J., & Prosser, M. (1998, March). University mathematics students’ conceptions of Mathematics. Studies in Higher Education, 23, 87-94.

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