Reflection: Diverse Entry Points Ideas on Subtraction - Section 4: Lesson Wrap Up


Today I noticed that the majority of the class took yesterday's examples and used their learning in today's word problem.  Yesterday, half of the class used the strategy of drawing all, removing a group, and then counting what was left.  Today the majority of the class used a number line and counted back.  To me this is a more efficient way of solving the problem and demonstrated the power of having student examples presented and the importance of strategically ordering the presentation of them.  By ending yesterday's lesson with the number line strategy, it appears that it stuck in many of the students minds.  Therefore, I purposefully ended today's lesson with a similar example of the number line strategy.  

  Student Work
  Diverse Entry Points: Student Work
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Ideas on Subtraction

Unit 10: Working with Numbers, Operations, and Story Problems
Lesson 3 of 13

Objective: SWBAT use a strategy to solve subtraction problems. SWBAT model the action of subtraction with counters or pictures. SWBAT record their subtraction strategy.

Big Idea: Story Problems, Subtraction Bingo, Dice, and Recording Sheets, it's a world of subtraction and opportunity is the key. Students are engaged in the subtraction concept through a variety of learning activities.

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