Grade Levels: K-3

This page provides information to support educators and families in teaching K-3 students about plane shapes. It is designed to complement the Plane Shapes topic page on BrainPOP Jr.

Classes revisit shapes each year and what your children already know will vary. Thus, a review of the basic shapes is helpful. The Plane Shapes movie covers and reviews circles, squares, rectangles, and triangles. More advanced shapes will be covered in a separate BrainPOP Jr. movie. It is important for your children to know the attributes of basic shapes before moving on to more difficult ones.

A circle is a round shape with no corners or sides. The distance from the center to any point on it’s line (circumference) is equal. A wheel, analog school clock, and coin are all usually circles. An oval is shaped like an egg—an oblong circle. A square is a shape with four corners and four sides. The length of each side is equal. A sandwich, window, and a tile can be squares. A diamond is a square turned on one of its corners. However, a diamond does not need to have right angles. A kite, or baseball diamond are examples. A rectangle is a shape with four corners and four sides. Each pair of opposite sides has the same length. Most refrigerators, computer screens, and bookcases are rectangles. A triangle is a shape with three corners and three sides. The sides do not have to be the same length, nor do all of the angles need to be the same. A slice of pizza, a sail in a sailboat, and a yield sign are all triangles.

Shapes are everywhere—in the items we use everyday and the things we see all around us. Encourage your children to look for shapes in their surroundings. How are shapes useful? When would using a square shape be more useful than using a round shape? We recommend watching the Solid Shapes movie together for further review.