No Series: Sharing Strategies for Counting Collections
Math.2.NBT.A.2
| Common core State Standards
- Math: Math
- 2: Grade 2
- NBT: Number & Operations in Base Ten
- A: Understand place value
-
2:
Count within 1000; skip-count by 5s, 10s, and 100s.
Math.3.NBT.A.2
Common core State Standards
- Math: Math
- 3: Grade 3
- NBT: Numbers & Operations in Base Ten
- A: Use place value understanding and properties of operations to perform multi-digit arithmetic
-
2:
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
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Discussion and Supporting Materials
Thought starters
- How can this activity be differentiated for different grades and abilities?
- Why is it important to discuss different ways to record strategies?
- How does Ms. Todd relate this activity to addition?
- See also Mathematical Practice Standard 5 in the CCSS?
School Details
Lakeridge Elementary School7400 South 115th St
Seattle WA 98178
Population: 417
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Teachers

Laretha Todd
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