## Reflection: Student Grouping Ways to Make 10- A Lesson on Decomposing - Section 3: Practice

In yesterday's lesson, I regrouped my students based on two common errors.  I used mats with those groups that I designed specifically for their needs.

﻿﻿Group 1- Students who had trouble creating two groups of manipulatives.  Mat 1  This mat is a simple two box mat that helped students keep their manipulatives organized into two groups.  For some students, I also covered the first group while they counted out the second group to help keep the groups separate.

Group 2- Students who had trouble counting all of the manipulatives to find the answer.  Mat 2  This mat has two boxes inside of an arrow and another box below the arrow.  I showed students how to create their two groups and then use their hand to slide all of the manipulatives down to the last box following the arrow.  Once all of the manipulatives were combined in the last box, they could count them to find the answer.

Student Grouping: Helping With Common Errors

# Ways to Make 10- A Lesson on Decomposing

Lesson 17 of 21

## Big Idea: Students will learn what it means to represent a number in different ways and will begin to explore decomposing numbers.

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Standards:
Subject(s):
Math, addition, decomposing numbers, Critical Area
55 minutes

### Christina Yingling-Smith

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