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Solving Addition Word Problems within 100: Using Tape Diagrams/Bar Models

2nd Grade • Half Day Lesson Plan
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Lesson Plan Description

Second Grade half day of math lesson plans containing 3 separate segments (30-60 minutes each) addressing Operations & Algebraic Thinking: solving word problems with an unknown total or part requiring addition within 100 (2.OA.1). These lessons include: steps of how to solve word problems, identifying important information in a word problem, use of pictures and tape diagrams/bar diagrams to solve addition problems, and explanation of thinking and strategies used to solve word problems. The third segment has students working collaboratively and teaching others what they have learned about solving addition word problems.

  • Segment 1: students will use drawings and tape diagrams to help solve an addition word problem. They will also explain how they solved the addition word problems.
  • Segment 2: students will read word problems and determine important information.Then they will determine the missing information they need to find to solve the word problems. Students will continue to use tape diagrams to help solve an addition word problem and write an equation to match.
  • Segment 3: students will work collaboratively in groups to write a word problem and solve a word problem. They will pretend to be the teacher and must explain their thinking and strategies they used to solve the word problems. They will apply all knowledge gained from segments 1 and 2 to complete this task.

These lessons can be taught over the span of a half day or you can use the lessons independently, broken up over several days.