A twist on the typical color-by-number, this color-by-shape choo-choo activity is sure to be a blast!

Here's a geometry challenge for your first grader that puts his counting skills to work: can he count the number of sides each shape has?

Have a blast coloring in this mandala made up of triangles and the number 3. This is a great way to remember that a triangle has three sides.

Have fun coloring this mandala that is made up of pentagons featuring the number 5! This is a great way to remember that a pentagon has 5 sides.

Practice coloring in the square shapes and the number 4 that make up this mandala. This is a fun and easy way to remember that a square is four-sided!

Here's a worksheet that gets kids thinking all about shapes and their sides to help them understand what makes a side a side.

Help your child practice recognizing rectangles with this colorful worksheet that challenges him to count up all the rectangles in the picture.