Reflection: Adjustments to Practice Addition: Getting Kids to "Talk Through" Their Regrouping - Section 1: A Quick Oral Assessment : Regrouping. What is it really?


In this transition to CCSS, I keep in the forefront of my mind and in my practice, that in order to master fluently adding multi-digit numbers expected in CCSS 4.NBT.B.4, kids have to be able to know why they regroup. The fluency of the "how" may be there, but the "why" is what is going to make their number sense and algorithms fluent and prevent mistakes. I also know from this experience in this time of transition, this is no easy task. I believe it will get easier the more I am committed and more my colleagues below me also adjust. It just takes time.

Reading numbers using place value ( 6 ones + 7 ones) out loud during regrouping is a step in the right direction for mastery! I will be continually asking them throughout the year, during anytime they talk about regrouping to use the place value words in their explanations of their algorithms.

It is my hope in this lesson that they start to practice and understand regrouping in the way that CCSS expects.

  Transitional Adaptations: Committed to the Language of "Why".
  Adjustments to Practice: Transitional Adaptations: Committed to the Language of "Why".
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Addition: Getting Kids to "Talk Through" Their Regrouping

Unit 10: Addition and Subtraction: Algorithms to One Million
Lesson 3 of 7

Objective: SWBAT explain regrouping in a standard algorithm using place value talk.

Big Idea: In this lesson students learn to "talk through" their multi-digit addition. They use technology to help them practice.

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