Look at Figure 1. What is the area of the rectangle? What does area describe?
Can you calculate the volume of Figure 1? Why or why not?
Possible response: no, because it is not a 3-dimensional figure.
How many cubes are in the first layer? How do you know?
30. Possible explanation: there are 6 cubes along the length and 5 cubes along the width, and
Using the base and height, what addition expression can you write to find the volume? What multiplication expression can you write?
Notice that Figure 2 is part of Figure 3. How can you find the volume of Figure 3?
Possible response: split Figure 3 into two rectangular prisms and add their volumes.
What is the volume of the second prism in Figure 3? Support your answer.
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