How many sides does a triangle have? Three! Sort shapes that have three sides and shapes that don't have three sides with this wacky worksheet.

Is it a square? Is it a triangle? This cut and paste worksheet will help your child categorize quadrilaterals, which are four-sided shapes.

Who says that you can't learn from playing? Invite your preschooler to sort out these silly shapes and put them together to make a funny face!

In this playful geometry worksheet, children will decorate the alien using colorful cutout shapes and lines.