Lesson plan

# 9. Practice converting measurements in order to compare amounts (FP)

teaches Common Core State Standards CCSS.Math.Content.4.MD.A.2 http://corestandards.org/Math/Content/4/MD/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1

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Lesson objective: Convert larger units to smaller units in order to compare quantities. This lessons uses cups, pints, quarts, and gallons.

This lesson helps to build procedural skill with measurement conversions. A function table is used here because it highlights how different units of measure can represent the same quantity. This work develops students' understanding that when solving measurement problems, it sometimes makes sense to express measurements given in a larger unit in terms of a smaller unit.

Students engage in Mathematical Practice 1 (make sense of problems and persevere in solving them) as they use the context to determine which units of measure to convert quantities to in order to make comparisons.

Key vocabulary:

• cup
• foot
• gallon
• mile
• ounce
• pint
• pound
• quart
• ton
• yard

Special materials needed:

• measurement tools (measuring cups, rulers, etc.)