During center time, have children create art pictures from shapes. Have a variety of shape blocks, including different types of triangles and sizes of shapes.
First ask the child to put the shapes that are alike in different piles, so he can find what he needs.
Children will be able to sort the shapes.
Use the exact terms for each type of triangle, so children begin to know the names isosceles, etc. Comment when children create a shape. “Oh look you made a diamond out of two isosceles triangles.”
 North Carolina Department of Public Instruction, 2015
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