Volume of rectangular prisms

Target: Find volume as a product of three edges.

Language target: Use cubic units.

Likely miss: Students compute surface area when the question asks how much fits inside.

Ask: How many cubes are in one layer?

If you see it: Ask whether the question is about covering or filling.

Evidence to listen for: The product of the three edges is labeled as cubic units.

Next: If faces were added, return to one layer of cubes.

Observable student moves: names both quantities, uses the represented relationship, and revises after feedback. This companion is not a score.