📚 Topic Summary
Volume is the amount of space a three-dimensional object occupies. We can measure volume by counting the number of unit cubes that fit inside the object. Each unit cube represents one cubic unit (like cubic centimeters or cubic inches). To find the volume, simply count all the unit cubes that make up the solid figure!
Let's practice calculating volume by counting unit cubes!
📏 Part A: Vocabulary
Match the terms with their definitions:
| Term |
Definition |
| 1. Volume |
A. A cube with sides of length 1 unit. |
| 2. Unit Cube |
B. The amount of space an object occupies. |
| 3. Cubic Unit |
C. A unit of measurement for volume (e.g., cm³, in³). |
| 4. 3-Dimensional |
D. Having length, width, and height. |
| 5. Length |
E. The measurement of something from end to end. |
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words: volume, unit cubes, cubic units.
To find the _______ of a rectangular prism, you can count the number of _______ that fill it. The volume is expressed in _______, such as cubic centimeters (cm³) or cubic inches (in³).
🤔 Part C: Critical Thinking
Imagine you are building a rectangular prism using unit cubes. If the bottom layer has 12 unit cubes, and the prism is 3 layers high, how many unit cubes are there in total? Explain your reasoning.