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Lesson Plan

6. Use addition strategies to solve word problems (A)

teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards CCSS.Math.Content.1.OA.B.3 http://corestandards.org/Math/Content/1/OA/B/3
teaches Common Core State Standards CCSS.Math.Content.1.OA.B.4 http://corestandards.org/Math/Content/1/OA/B/4
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Lesson objective: Solve word problems using addition strategies.

This lesson provides an opportunity for students to apply their knowledge and understanding of using a number line and related addition and subtraction facts to a real-life situation. Students are asked to figure out whether the money Kareem has saved is enough money to buy a baseball and a glove. 

Key Concept students will use: 

  • We can use strategies such as making ten, counting on, and the relationship between addition and subtraction to add and subtract within 20.

Skills students will use:

  • Representing and solving an addition/subtraction word problem within 10 (Unit K-10; K.OA.A.2).
  • Understanding that the meaning of addition and/or subtraction doesn’t change when different strategies are used (Unit K-10).

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they solve a word problem using the relationship between additon and subtraction using number lines and/or a triangle diagram. 

Key vocabulary: 

  • equation
  • number line
  • related facts

 

Related content

Appears in

Developing addition and subtraction strategies

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