Make Math Moments Academy › Forums › Mini-Course Reflections › The Concept Holding Your Students Back › Lesson 4-2: Where Comparison Lives In Additive Thinking – Discussion › Reply To: Lesson 4-2: Where Comparison Lives In Additive Thinking – Discussion
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I sort of marvel at how important numberlines become and the role they play in developing number sense. I do not remember using number lines, more so, I remember using manipulatives to combine or take away.