Reflection: Diverse Entry Points Using the Number Grid to Add or Subtract Ten - Section 3: Playing the Game


Before reading this section, I ask that you watch the video in the section resource.  In this video, you will see a student that I teamed up with.  This was intentional, as I have been working 1:1 with her throughout this unit.  I wanted to see if she made connections of moving up and down the number grid (as moving 10).

What I noticed was that number grid was confusing for her and she would have been better off using a number line.  This would have been a better approach for her and would have helped better define the addition and subtraction. If you have students who struggle with the number grid, you might want to move them to using a number line, which will can be a more straightforward tool for them to use.

  Diverse Entry Points: Intervention Ideas
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Using the Number Grid to Add or Subtract Ten

Unit 12: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Lesson 3 of 9

Objective: SWBAT add or subtract ten to/from a 2 digit number.

Big Idea: The Number Grid Challenge. Students will play a game that requires them to add or subtract ten from a number using the number grid. They will record their results using standard notation.

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Math, Number Sense and Operations, 1st Grade, adding ten, subtracting ten, counting by 10
  70 minutes
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