## Strategy Level Guide.docx - Section 2: Opening Discussion

Strategy Level Guide.docx
Strategy Level Guide.docx

# Books and Base 10

Unit 9: Adding and Subtracting: Base Ten
Lesson 2 of 5

## Big Idea: Head to the library and figure out how many books are stacked up! Students look back at their strategies from yesterday's lesson and revisit the best ways to solve these problems using what they know about place value!

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Standards:
Subject(s):
Math, Number Sense and Operations, subtraction, addition properties
53 minutes

### Amanda Cole

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