# 3. Practice Converting Metric Units of Mass & Capacity (FP)

teaches Common Core State Standards CCSS.Math.Content.4.MD.A.1 http://corestandards.org/Math/Content/4/MD/A/1
teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.1 http://corestandards.org/Math/Content/4/NBT/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Convert metric measures of mass and capacity from larger units to smaller units by looking at the relationship between the metric system and the base 10 system.

This lesson helps to build procedural skill with metric conversions. A place value table is used here because it supports the relationship between the metric system and the the base 10 system. This work develops students' understanding that a digit in one place represents ten times what it represents in the place to the right.

Students engage in Mathematical Practice 7 (look for and make use of structure) as they use a place value table and evaluate its relationship to the metric system. Students should look at the metric prefixes for mass and capacity and recognize that while the base unit may change from liters to grams, the prefix and the relationship to the base 10 system remains the same.

Key vocabulary:

• gram
• liter
• kilogram
• milliliter
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