14. Convert between metric units (FP)

teaches Common Core State Standards CCSS.Math.Content.5.MD.A.1 http://corestandards.org/Math/Content/5/MD/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2

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Lesson objective: Convert metric units from smaller to greater units by using division with powers of 10, and greater to smaller units by using multiplication with powers of 10.

This lesson helps to build fluency with metric measurement conversions. The Metric Chart is used here because it is related to the Base Ten Place Value system. This work develops students' understanding that metric measurements can be converted by multiplying or dividing by powers of 10.

Students engage in Mathematical Practice 2: Students will reason abstractly and quantitatively as they make sense of how metric measurement units compare, such as 10 mm = 1 cm, 100 cm = 1 m, 1000 m = 1 km.  Students will make sense of quantities and their relationships in problem situations by converting between various metric units when measuring length.

Key vocabulary:

• equivalent
• length
• measurement
• metric abbreviations (km, hm, dam, m, dm, cm, mm)
• metric prefixes (kilo-, hecto-, deka-, deci-, centi-, milli-)

Special materials needed:

• game cards
• game Directions and Spinner
• game Recording Sheet
• paper clip
• pencil
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