Lesson plan

# 9. Divide decimal numbers greater than one (FP)

teaches Common Core State Standards MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards 5.NBT.B.7 http://corestandards.org/Math/Content/5/NBT/B/7

# 9. Divide decimal numbers greater than one (FP)

Lesson objective: Divide decimal numbers greater than one using different representations.

This lesson helps to build the procedural skill with dividing decimals. The use of 100 flats supports the connection between decimal division and whole number division. This work develops students' understanding that dividing decimals is no different than dividing whole numbers.

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they decontextualize a decimal division problem and represent it symbolically with 100 flats and attend to the meaning of the quantities and not just how to compute them.

Key vocabulary:

• dividend
• divisor
• estimation
• quotient

Special materials needed:

• blank 100 flats on paper
• colored pencils