Reflection: Developing a Conceptual Understanding Story Problems Involving Subtraction - Section 4: Lesson Wrap Up


I was purposeful in choosing the three student examples that I did.  I wanted to keep in mind the rule of three.  This being that students (at this age) really can't remember more than 3 examples, that I wanted to also have a variety, and that I wanted to end with an example that reinforced the strategy that I really wanted students to end class thinking about.  

In this case I ended with the student who drew all of the cats, then crossed some out, and finished by counting what was left.  Her approach was very clear and organized.  Although the other two approaches were correct, this basic and organized approach will allow all to leave with a clear explanation of solving the problem.  

  Reinforcing Student Strategies
  Developing a Conceptual Understanding: Reinforcing Student Strategies
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Story Problems Involving Subtraction

Unit 10: Working with Numbers, Operations, and Story Problems
Lesson 2 of 13

Objective: SWBAT use strategies to solve subtraction problems. SWBAT document their approach to solving subtraction problems.

Big Idea: Through discussion and cooperative learning, students will use strategies to solve and record solutions to subtraction story problems.

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Math, Number Sense and Operations, Operations , subtraction, 1st Grade, story problems
  70 minutes
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