Friday, November 18, 2016

2D & 3D Shapes

When it comes to recognizing and comparing 2D and 3D shapes, kids often mix the 2D ones up for the 3D ones and vice versa.  I like to play a lot of games that involve saying the names of the shapes repeatedly so they get a TON of exposure to them.

My favorite one involves the kids sitting in a circle on the carpet.  In the middle of the circle, I lay out 2D flashcards of shapes and small 3D models.  Then, I call out the name of a shape or some descriptors for a shape and students have to race the person across from them in the circle to grab the shape.  There are two of every shape in the middle of the carpet.  

If I say the descriptors only, the students must also name the shape correctly to score a point for their team.   It gets a little heated! But it promotes good discussion about some of their common misconceptions.

We also build models of the 3D shapes with toothpicks and marshmallows, and as a wrap-up for the unit, we have a shape snack sort.

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