📚 Topic Summary
Three-dimensional (3D) solids are shapes that have length, width, and height. This means they take up space! In this worksheet, we'll be comparing and contrasting different 3D solids like cubes, cones, cylinders, and spheres. Comparing means finding out how they are similar, and contrasting means finding out how they are different. For example, a cube and a sphere are both 3D, but a cube has flat faces and a sphere is round!
🧮 Part A: Vocabulary
Match the word with its definition:
| Word |
Definition |
| 1. Cube |
A. A 3D shape with one curved surface and one circular flat face. |
| 2. Sphere |
B. A 3D shape with six square faces. |
| 3. Cylinder |
C. A perfectly round 3D shape, like a ball. |
| 4. Cone |
D. A 3D shape with two circular flat faces and a curved surface. |
| 5. Solid |
E. An object that takes up space and has a shape. |
✏️ Part B: Fill in the Blanks
Use the words faces, round, and edges to complete the paragraph.
A cube has flat __________, while a sphere is __________ all over. Cubes have __________, but spheres don't have any.
🤔 Part C: Critical Thinking
Imagine you're building a tower. Would you rather use cubes or spheres as the base? Why?