## Reflection: Checks for Understanding Balancing Equations and Counting Backwards - Section 1: Warm Up

As I connected to prior learning, I presented the expanded form of 246, as well as the number 246. I had presented the expanded notation in the past, but was not certain if students really understood how expanded notation could be used.

As students showed their thinking in their journals, and then talked about how they knew that the two were equal, I could see that students did understand the expanded form. This helps me to plan future lessons knowing that students have an understanding of place value and what that means.

Expanded Notation
Checks for Understanding: Expanded Notation

# Balancing Equations and Counting Backwards

Unit 2: Adding and Subtracting the Basics
Lesson 16 of 18

## Big Idea: The Common Core standards for second grade include being able to add and subtract with in 100. Students need practice with finding the solution even if it is not the answer that is missing.

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60 minutes

### Beth McKenna

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