Lesson plan

3. Creating equations from a pictorial solution (A)

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teaches Common Core State Standards CCSS.Math.Content.1.OA.A.1 http://corestandards.org/Math/Content/1/OA/A/1
teaches Common Core State Standards CCSS.Math.Content.1.OA.C.6 http://corestandards.org/Math/Content/1/OA/C/6
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8
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Lesson objective: Apply understanding of addition and subtraction and knowledge of using a variety of tools to solve problems and to create equations.     

This lesson provides an opportunity for students to apply their understanding of the meaning of addition and subtraction to a real-life situation. Students are asked to examine pictorial solutions to addition and subtraction problems to create their own equations. The pictorial solutions will be done on a variety of familiar tools such as number lines, ten frames, snap cubes, or number bonds.

Key Concept students will use: 

  • The meaning of addition and subtractions do not change, no matter which tool you are using.

Skills students will use:

  • Addition can be thought of as "putting together" and subtraction as "taking apart."
  • Addition and subtraction problems can be solved using a variety of tools.
  • Equations can be used to represent mathematical problems.

Students engage in Mathematical Practice #3 (Construct viable arguments and critique the reasoning of others) as they share equations they have created and discuss their reasoning for which equatioon is the best match to a pictorial solution. 

Key vocabulary: 

  • tool 
  • addition
  • subtraction
  • equation

 

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