Build student understanding of the defining attributes of triangles with this sorting activity. Students will cut out different shape cards and sort them into examples and non-examples of triangles.

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.

Give your students a chance to sort polygons into categories that make sense to them.

The animals are all mixed up--can your kindergartener sort them out and count them up according to kind?

Teach your students to sort triangles as acute, right, or obtuse based on their internal angle type.

Introduce kids to key math skills on this shape-filled worksheet. Kids count and color the different shapes, then make a graph to show how many are pictured.

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

Are your students still tripped up by those tricky trapezoids? This geometry worksheet can help! Give your second graders a chance to have fun while they practice trapezoid identification with this cut-and-paste activity.

Offering shape recognition and counting practice, this worksheet packs in the preschool math learning.

What is the name of this shape? Is it a parallelogram or square? Teach your students to classify two-dimensional shapes using a Venn diagram.

See if your child can find all the triangles hidden on this geometry worksheet.

Strengthen your child's geometry skills with this printable worksheet. Use this resource with your students to classify two-dimensional shapes like parallelograms, quadrilaterals, squares, and triangles.

Can your first graders tell the difference between a square and a cube? How about a triangle and a cone? Use this geometry assessment to gauge your students’ abilities to use attributes to sort 2-D and 3-D shapes.

Kids sometimes don't distinguish between a shape that's open and one that's closed. Here, kids can see the difference as they classify shapes as open or closed.

Can your kid tell the difference between 2-dimensional and 3-dimensional shapes? Kindergarten is a good time to start!

Bust out those crayons, it's time to test your knowledge of basic shapes! Have your first grader sort out these shapes by color.

This shape challenge worksheet doubles as a coloring page, and builds early geometry skills.

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!

Stellar students, get ready for a math mission from outer space! Your child will get to help this alien sort and color the different shapes in this worksheet.

Pentagons make for perfect houses! Help students to identify and develop an understanding of this 2-D shape with this fun activity. Students will sort out the pentagons from other shapes and then turn them into houses.

How many shapes are there? They're all mixed up! Can your kid count how many there are of each type?

Here's a colorful math challenge for your kindergartener: can he count up all the triangles in the birthday party scene?

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?

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

Ovals lead the way in this counting and drawing math worksheet. Kids boost fine motor skills as they trace and draw their own ovals, then count them up.

Learning how to count doesn't have to be a chore. Your preschooler won't even realize he's learning as he counts up the balls and bats hidden on the page.