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Monday, September 7, 2009
Friday, June 12, 2009
Slide 9: v=value

The other part of the value proposition, that student effort has value, leads us to help students see that math is relevant. Mathematical and algebraic thinking are things we do all the time (check an earlier blog). And some particular mathematical skills -- arithmetic, data analysis, and statistics, among others -- have become part of being a 21st century citizen using 21st century tools, like spreadsheets. It’s worth learning math, not for the grade, but to satisfy intellectual curiosity, to improve analytical thinking, and to be an informed consumer. Math has value and the effort to learn has value too.
There you go. b+i+f+a=the kids we get in our math classrooms (born+informal+formal+affect). And e+c+d+v=the kids we want (evaluate+connect+differentiate+value). Like most models and metaphors, these formulas are not the truth. But they do help us think about our students and how to improve their learning experiences.
Slide 8: d=differentiate

At the same time, we can also adjust the resources, or supports, that a student has available to complete a task. We can offer alternative visualizations, definitions, and worked examples. Think back to my Verizon Wireless analogy a few entries ago. We can give students “the network” so that those scary math dead zones aren’t so daunting.
Slide 7: c=connect

Sometimes building on to the existing knowledge base will work, but it’s difficult to know what you’re building onto with every child. Instead, it can be more efficient and effective in the long-term to rebuild the structure from scratch. Provide students with the common concrete experiences that can provide the tangible foundation out of which you abstract the desired mathematical concepts. In any case the connection is key. If students see the knowledge as isolated bits of information to remember, you’ve got a cognitive overload situation on your hands. And you don’t want that.
Slide 6: e=evaluate


Let’s look at some items related to fractions to dig into this question. Here’s one from the grade 8 NAEP test in 2007. Only 49% of students answered it correctly. The most common incorrect response was E, which, oddly is the only sequence in which both the numerator and denominator go from greatest to least, the opposite of what the question requires. However clever our error analysis, we will never know if the selection of E represented a common misconception (that smaller numbers, in this case numerators, means bigger quantities when it comes to fractions) or just a futile guess with the last available choice.
Even individual correct responses can be deceiving. We did some field research for a fraction program Tom Snyder Productions is releasing this fall. We found students who consistently exhibited their understanding of adding fractions with problems like this one.


What we really need, I think, are layered assessments. The high level ones -- periodic achievement tests -- act as triage. They let us know which students need more in-depth diagnosis. But what troubles should we diagnose for? I suggest targeted key concepts, like those identified by the NCTM Curriculum Focal Points or the National Math Advisory Panel’s algebra foundations. Focus on the foundations, like fluency with whole numbers and fractions. Employ targeted, deep assessments to get a true window into what’s happening inside our struggling students’ heads.


Slide 5: a=affect

Slide 4: f = formal instruction

I could ask more questions, but the point is that past instruction matters. Many of the struggles students have with math come from what and how they were taught. Confused ideas about equivalence and the equal sign (=), overgeneralization of whole number algorithms into fractions, the lack of a unified number system across integers and rational numbers, and so on are really instructional issues. Without a good understanding of the models and approaches students have accumulated in school, it’s tough to make the kind of connections that can move them forward sensibly.
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