Thursday, 3 April 2014

Creating definitions: Card Sort Similar and Congruent Shapes

I remember from a PEEL PD session in my first year about allowing student to come up with rules, definitions or generalizations to make it more meaningful and memorable.

One card sort I tried for the first time was Similar and Congruent from The Dog Days of Math Blog (thank you!).



I gave each student a mini deck of these cards in which they were given about 5-10 min to decide how to group them into two groups. They needed to come up with properties or explanations to why they decided to group them that way. It was a great quick thinking and discussion activity before formally defining the terms.


A fun warm up activity that allowed students to have some ownership and connection with the definitions.


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