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๐ Topic Summary
A sphere is a perfectly round 3D shape, like a ball! It has no flat faces, edges, or corners. Every point on the surface of a sphere is the same distance from the center. Think of a basketball or a globe โ those are spheres! Understanding spheres helps us describe and understand the world around us.
๐ง Part A: Vocabulary
Match the term with its definition:
- ๐ Radius
- ๐ Sphere
- ๐ Center
- ๐ Diameter
- ๐ 3D Shape
Definitions:
- A shape with length, width, and height.
- The distance from the center of a sphere to its surface.
- A perfectly round 3D object.
- The middle point of a sphere.
- The distance across a sphere through its center.
โ๏ธ Part B: Fill in the Blanks
A sphere is a three-dimensional shape that is perfectly _____. It has no _____ or _____. The distance from the center to any point on the sphere's surface is called the _____. A good example of a sphere is a _____.
๐ค Part C: Critical Thinking
Can you think of three objects you see every day that are shaped like a sphere? Explain why those objects are useful in that shape.
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