Lesson plan

7. Count on to add data to a set (A)

teaches Common Core State Standards CCSS.Math.Content.1.MD.C.4 http://corestandards.org/Math/Content/1/MD/C/4
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.5 http://corestandards.org/Math/Content/1/OA/C/5
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Lesson objective: Apply the counting on strategy to add data into an organized data set.

This lesson provides an opportunity for students to apply their knowledge and understanding of counting on to a real-life situation. Students are asked to organize a mixed jar of jellybeans into two jars of a single color and count on to find how many jellybeans are in each jar as a result.

Key Concept students will use: 

  • We can use counting to add because counting on n more is the same as adding n more.

Skills students will use:

  • Organizing data into two categories.
  • Representing the new data in a picture and table.
  • Using the counting on strategy to add to an amount.
  • Creating number sentences to model counting on to add.

Students engage in Mathematical Practice 4 (Model with mathematics) as they as they organize and add data, modeling the addition in number sentences.

Key vocabulary: 

  • add
  • count on
  • data set
  • data table
  • organize
  • represent
  • sum
  • total

Special materials needed:

  • counters (optional)