Reflection: Student Ownership Let Me Count The Ways to Get An Answer - Section 1: Warm Up


When I posed the word problem about the kids on the playground, I had an answer in mind. I knew that there were 18 students on the playground. The 3 on the swing were already part of that 18. I assumed that the students would add the 9 more and get 27. 

As I walked around the room I came to a student who had 24 as an answer. I asked her to explain why she had 24 as an answer. She explained that of the 9 more that came, the 3 on the swings were not "on" the playground because they were on the swings, so she added the 6 actually "on" the playground to the 18 that were there to begin with and ended up with 24.

Her thinking was sound, and clearly showed an understanding of the word problem. Her thinking actually went one step beyond my reasoning. I told her how much I appreciated her explanation and how I had not actually thought of that, but she was correct.

  Amazing Thinking
  Student Ownership: Amazing Thinking
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Let Me Count The Ways to Get An Answer

Unit 2: Adding and Subtracting the Basics
Lesson 1 of 18

Objective: SWBAT demonstrate their thinking in problems that require addition and subtraction of one and two digit numbers

Big Idea: One Common Core goal for second grade is the ability to use place value in the addition and subtraction of numbers to 100. This lesson is a foundation for this skill.

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