Three-Dimensional Shapes: Part 1

Lesson Plan - Get It!

Audio:

Let's jump right in and start learning about three-dimensional shapes!

Three-dimensional shapes have three dimensions: length, width, and height. Three-dimensional shapes are not flat. You can hold a three-dimensional shape in your hand because it is solid.

The first shape you will learn about today is a cube. A cube is a three-dimensional shape.

• Can you count the number of squares on one of the cubes below?
• How many did you count?

If you counted six equal squares, you are correct! Each square is called a face. A cube has six faces. Try finding an object that is shaped like a cube in your learning space.

• Did you find a cube?
• Does it have six square faces?

Fantastic!

The next three-dimensional shape you are going to learn about is a pyramid. Count the number of faces on the pyramid below.

• How many faces did you count?

If you said four faces, you are correct! A pyramid has three triangle faces and one square face.

A rectangular prism is a three-dimensional shape.

• How many faces are on a rectangular prism?

• Did you answer six?

Great! A rectangular prism has six faces. A rectangular prism is similar to a cube because they both have the same number of faces.

• What do you notice is different about the rectangular prism?

• Did you say that some of the faces on the rectangular prism are longer than the faces on the cube?

Excellent! A cube has six equal square faces. A rectangular prism has some faces that are rectangular.

The last three-dimensional shape you will learn about in this lesson is the triangular prism.

• How many faces does a triangular prism have?

• Did you say five faces?

Great job! A triangular prism has bases that are triangles.

Move on to the next section to learn more about cubes, pyramids, rectangular prisms, and triangular prisms.