Grade 1 Geometry: 3D Shapes
Learn about solid shapes
What You'll Learn
- Identify cubes, spheres, cylinders, and cones
- Understand the difference between 2D and 3D
- Recognize 3D shapes in real life
📖What are 3D Shapes?
3D shapes are solid shapes that you can hold. They have length, width, AND height (or depth).
✏️Common 3D Shapes
Sphere - like a ball. Cube - like a dice. Cylinder - like a can. Cone - like an ice cream cone.
💡Real Life Examples
A basketball is a sphere. A box is a rectangular prism. A party hat is a cone!
Worked examples
Real problems from the practice worksheets, solved one step at a time.
Example 1
A candle is shaped like a ___.
- Picture a candle.
- A cylinder has 2 flat circle faces and a curved side.
- So a candle is shaped like a cylinder.
Answer: cylinder
Example 2
This solid is called a ___.
- Look at the bottom. It is a flat circle.
- The other end comes to a point.
- A solid with 1 flat circle that comes to a point is a cone.
Answer: cone
Example 3
What flat shape are the 2 ends of a cylinder?
- Look at the top and bottom of a can.
- Each end is round.
- So each end is a circle.
Answer: circle