# All About 3D Shapes - What is a Sphere?

3D shapes are solid objects that have three dimensions: length, width, and height. Unlike 2D shapes which are flat, 3D shapes have height or depth. Learning 3D shapes not only helps kids with their geometry study but also helps them build their spatial awareness. Kids are expected to identify and describe 3D shapes in kindergarten. They should be able to sort, describe and name 3D objects in the surrounding environment in grade one. And they should be able to describe the features of 3D objects in grade two. The most common 3D shapes include spheres, cylinders, cubes, and cones. A sphere is a perfectly round geometric three-dimensional shape, just like a ball. It has one continuous surface with no edges.
This worksheet is all about spheres. It helps kids learn about the concepts of spheres and how to recognize spheres. By definition, a sphere is a geometrical object in the three-dimensional space that is the surface of a ball. It is perfectly round all the way around. The feature of a sphere is that all points on the surface of a sphere have the same distance to the center of the sphere. This distance is called the radius of the sphere. Spheres can be any size and any color. Spheres are everywhere. Some real-life examples of the spheres include globe, basketball, football, beach ball, orange, tennis ball, billiard ball, marble, and so on. This worksheet is a great tool to introduce the sphere shape to kids.

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