## Reflection: Intervention and Extension Combinations, Day 2 - Section 2: Center Time

I wanted to include a quick note about Logan.  He is starting to understand and use the counting on strategy but still had some confusions about it.  If you watch the video Logan 1 you will see that he was trying to use the strategy but still trying to put both numbers on his fingers.  I did an intervention and then let him work with it for a few minutes.  I then ant back and asked him to model the strategy again.  If you watch the video Logan 2, you will see how the intervention helped him move on with the strategy.

Intervention and Extension: Counting On Videos

# Combinations, Day 2

Unit 2: Working with Numbers, Operations, and Story Problems
Lesson 4 of 11

## Objective: SWBAT solve a problem in which the total and one part are known. SWBAT prove that all the combinations of a given sum have been found.

### Thomas Young

203 Lessons14 new

## Big Idea: Can they count on? That will be the determined after you interact with students through two engaging unknown addend activities.

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Standards:
Subject(s):
Math, Number Sense and Operations, Operations , 1st Grade, Counting on, Finding Combinations, word problems
65 minutes

### Thomas Young

203 Lessons | 14 new

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