Georgia 5.GSR.8.3
The Standard
Investigate volume of right rectangular prisms by packing them with unit cubes without gaps or overlaps. Then, determine the total volume to solve problems.
Georgia's K-12 Mathematics Standards · Examine properties of polygons and rectangular prisms, classify polygons by their properties, and discover volume of right rectangular prisms.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use unit cubes to model a box and find how many cubes fill it. They connect cubes in one layer to the number of equal layers.
What Mastery Looks Like
- Given a model or dimensions, a student finds the cubes in one layer and uses the number of layers to find the total. They explain their reasoning and label the answer in cubic units.
Common Misconceptions
- Students may count only the visible cubes or forget hidden cubes inside the prism. They may add the dimensions instead of multiplying, or label volume with square units instead of cubic units.
How to Assess It
- Give this exit ticket: “A box is 4 cubes long, 3 cubes wide, and 2 cubes high. Find its volume and show how the layers prove your answer.”
Lesson moves
Ways to Teach It
Have pairs use snap cubes to build a 3 by 2 by 4 prism, then record cubes per layer, layers, and total volume.
Ask students to explain why prisms measuring 4 by 3 by 2 and 6 by 2 by 2 have the same volume.
Play a matching game with cards showing prism drawings, dimensions, layer counts, and total volumes.
Measure a small shipping box with a unit-cube template, then calculate how many unit cubes would fill it.
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Printable 5.GSR.8.3 Worksheet
A ready-to-print activity worksheet aligned to 5.GSR.8.3, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 5.GSR.8.4
Discover and explain how the volume of a right rectangular prism can be found by multiplying the area of the base times the height to solve authentic, mathemati...
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- 7.GSR.5.8
Explore volume as a measurable attribute of cylinders and right prisms. Find the volume of these geometric figures using concrete problems.
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