📚 Topic Summary
3D shapes are all around us, like balls, boxes, and cones! Some shapes, like spheres and cylinders, can roll because they have curved surfaces. Other shapes, like cubes and rectangular prisms, can stack easily because they have flat faces. Understanding which shapes roll and which stack helps us understand their properties and how they work in the real world. Knowing these properties helps us predict how they behave.
🧠 Part A: Vocabulary
Match the word to its definition:
- Cube - A. A 3D shape with a circular base and a point at the top.
- Sphere - B. A 3D shape with six square faces.
- Cylinder - C. A 3D shape that rolls in all directions.
- Cone - D. A 3D shape with two circular faces and a curved surface.
- Rectangular Prism - E. A 3D shape with six rectangular faces.
Answers: 1-B, 2-C, 3-D, 4-A, 5-E
✍️ Part B: Fill in the Blanks
Fill in the missing words in the paragraph below:
A ______ has flat faces, so it can ______. A ______ has a curved surface, so it can ______. A ______ is a shape that can be stacked.
Answers: Cube, stack, sphere, roll, rectangular prism
🤔 Part C: Critical Thinking
Imagine you are building a tower. Would you rather use spheres or cubes as the base? Why?
Answer: Cubes, because they have flat faces that stack easily and provide a stable base.