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Lesson Plan

10. Composing the numbers 11-19 to solve problems by counting on from 10 (A)

teaches Common Core State Standards CCSS.Math.Content.K.NBT.A.1 http://corestandards.org/Math/Content/K/NBT/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Solve problems by counting on from 10 to reach the numbers 11-19.

This lesson provides an opportunity for students to apply their knowledge and understanding of counting on from ten to reach the numbers 11-19 to a real-life situation. Students are asked to figure out how many cars are in the parking lot when the top lot is full with 10 cars and some more cars pull in, then they are to record their answers in pictures, numbers, and equations.

Key Concept students will use: 

  • We can count on from 10 by 1, 2, 3, 4, 5, 6, 7, 8, or 9 to reach the numbers 11-19.

Skills students will use:

  • counting on from ten to reach the numbers 11-19.
  • finding the sum of 10 ones and 1, 2, 3, 4, 5, 6, 7, 8, or 9 ones.
  • composing numbers 11-19 with ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

Students engage in Mathematical Practice 7 as students look for and make use of structure as they count on from ten to make a teen number

Key vocabulary: 

  • add
  • addend
  • compose
  • count on
  • decompose
  • sum 
  • "teen" number

Special materials needed:

  • Parking Lot cars
  • Parking Lot game board
  • recording sheet
  • spinner (pencil and paperclip for spinning)
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