Lesson 7
Cubic Units of Measure
Lesson Purpose
Lesson Narrative
In previous lessons, students used unit cubes with a side length of 1 unit to determine the volume of right rectangular prisms. In this lesson, the units are now a specific unit of measure. In grade 5, students use words, not exponents, when recording the cubic unit of measure, such as “cubic centimeters (cm),” “cubic feet (ft)” or “cubic inches (in).” The exponents in Grade 5 are limited to powers of 10, which will be addressed in a later unit.
In this lesson, students distinguish between different standard unit measures of volume. They examine the distinction between cubic cm, cubic in, and cubic ft. Throughout the lesson, students share their rationale for choosing a unit to measure specific realworld objects and learn the importance of identifying the unit of measure when finding the volume of an object (MP6).
 Representation
Learning Goals
Teacher Facing
 Find the volume of rectangular prisms with standard units of measure by multiplying the base times the height or multiplying the length times the width times the height.
Student Facing
 Let’s use different sized cubic units to measure volume.
Required Materials
Materials to Gather
Materials to Copy
 Info Gap Volume Cards
Required Preparation
CCSS Standards
Addressing
Lesson Timeline
Warmup  10 min 
Activity 1  10 min 
Activity 2  25 min 
Lesson Synthesis  10 min 
Cooldown  5 min 
Teacher Reflection Questions
Suggested Centers
 Five in a Row: Multiplication (3–5), Stage 4: Three Factors (Addressing)
 Capture Squares (1–3), Stage 7: Multiply with 6–9 (Supporting)
Print Formatted Materials
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Additional Resources
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