Lesson plan

# 2. Ten cars make one trailer (FP)

teaches Common Core State Standards CCSS.Math.Content.1.NBT.B.2a http://corestandards.org/Math/Content/1/NBT/B/2/a
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2

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Lesson objective: Bundle 10 ones into one group of 10.

This lesson helps to build procuedual skill with place value. A ten frame is used here because it represents 10 single ones bundled into one unit of 10. This work develops students' understanding that the one in the tens place of a teen number is equal to one group of 10.

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they represent bundles of 10 both pictorially and numerically in a ten frame and on a number path.

Key vocabulary:

• bundle
• frame
• group
• ones
• singles
• ten

Special materials needed:

• counters
• 1- 9 numeral cards