Vito Prosciutto: Teaching community college math on the road to a PhD.

Monday, April 19, 2004

Algebra dominoes 

Observing some other classes today, I saw a neat manipulative used in one class: "Algebra dominoes". This consisted of 30 paper rectangles along the lines of
17 If x=17
Then 2x+3=?
It provides a somewhat fun way of reinforcing some of the math concepts that the students will be using. I didn't look closely, but I would hope that there would be a mix of "easy" problems like 2x+3 and "hard" problems like 4+3x.

Then, a well-designed set would be set up to alternate these problems in such a way that a basic mistake like 2+3(4)=20 would quickly lead back to the card to give quick feedback to the student that they had made a mistake. This shows promise as a review activity, or even teaching tool.

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