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Published byMilton McKenzie Modified over 9 years ago

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VOLUME 5.MD.3 5.MD.4

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Cubic Units Volume is measured in cubic units. You could use cubes to fill a rectangular prism such as a box.

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One Cubic Unit 1 unit (height) 1 unit (length) 1 unit (width) A unit might be measured in inches, feet, centimeters, etc.

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How many cubic units are in this cube? Build this cube. Yes, it is 8 cubic units!

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How many cubic units are in this rectangular prism? Yes, it is 8 cubic units! Replicate this rectangular prism.

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How about this one? Remember… there are some cubes you can’t see! Watch...

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How many cubic units are in this rectangular prism? Yes! There are 12 cubic units! Replicate this rectangular prism.

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Number of cubes in each layer 3 x 6 = 18 cubic units Number of layers Let’s try it! The bottom layer has 2 rows of 3 cubic units. 2 x 3 = 6 cubic units There are 3 layers of 6 cubic units Replicate this rectangular prism.

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Find the volume of this one! What did you find? 24 cubic units Replicate this rectangular prism.

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Partners use your cubes to build a rectangular prism or a cube with a volume of 15 cubic units. Partners raise your hands when you have finished building a rectangular prism or cube with 15 cubes. Could there be more than one way to make a rectangular prism?

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One partner build a rectangular prism or cube. Have your partner tell you the volume. Then the other partner gets to build a rectangular prism or cube. Have your partner tell you the volume. You may keep doing this until time is called.

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Discuss with your partner the strategies you used to find the volume of rectangular prisms and cubes. Be ready to share your strategies with the class.

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