Learning about shapes sets the stage for understanding geometry. As your eight-year-old's shape vocabulary grows, so does their math knowledge. At this age, they can often explore more complex 2D shapes like parallelograms and octagons, and new 3D shapes like square pyramids and triangular prisms. Encourage your child to use mathematical language, such as "rhombus" instead of "diamond" or "angles" instead of "corners."

Support your child's growing knowledge of shapes:

Get your child involved with making his own three-dimensional shapes with a variety of materials. Use toothpicks and gumdrops (or mini marshmallows) to create three-dimensionalshapes like cubes, rectangular prisms or triangular pyramids. For three-dimensionalshapes with round edges (like cones and cylinders), paper usually works better. Here are two examples from Bob the Builder: Cereal Box Building and Cheese Cube Construction.

Cyberchase 3D Builder

Buzz and Delete accidentally zapped the houses in Botopolis totally flat. Your child can help rebuild the town by using 2D shapes and spatial reasoning skills to construct 3D structures.

Play with Tangram Puzzles

Tangrams are ancient Chinese puzzle pieces, and they are a great way to explore shape composition and decomposition! Print out your own here, or the next time you eat a sandwich, use it as a learning experience!

Escape from Greasy World

There is trouble in Greasy World and Professor Fizzy needs help. As your child helps to save the day, she will learn to rotate puzzle pieces to fit them together to make a picture, sort objects based on multiple attributes, and order objects by height and length.

Teach Squares vs. Rectangles

Using graph paper, have your child draw both a square and a rectangle. Discuss why they are different and why they are the same. Can your child draw a rectangle made out of two squares? Emphasize that a square is a special kind of rectangle that has an equal length on all sides.

Your child can practice shapes and spatial reasoning skills by catching and rotating shapes to fill the spaces in this windy game.

Hidden Two-Dimensional Shape Drawing Challenge

At this age, your child can probably draw two-dimensional shapes fairly well. Challenge them to draw a picture using any combination of the following shapes: square, circle, triangle, rectangle, pentagon or hexagon. See if they can create a scene using all six of these shapes! Then it's your job to find the shapes within the picture.

Sharpen Shape Skills with the Shape Toolkit

Odd Squad agents frequently use their knowledge of shapes to solve odd mysteries. In this activity, your child can sharpen shape skills by completing four shape challenges.

Odd Squad focuses on a kid-run agency that saves the day whenever something unusual happens. Emphasizing problem solving, teamwork and perseverance in every strange and hilarious new assignment, agents use math to investigate weird problems -- and your child can help!