Math Curriculum
Level C
Unit: Number Base Ten (Decimals)
Lesson 6.5.2 Using Diagrams to Represent Addition and Subtraction
Instructor Materials
- Teacher guide
- Slides
- Squares and Rectangles resource
- Practice Problems resource
- CCRS standard: 6.NS.3
- Learning goal: Compare and contrast (orally and in writing) vertical calculations and base-ten diagrams that
represent adding and subtracting decimals. Explain (in words and through other representations) that adding and subtracting decimals requires combining digits that represent like base-ten units. Interpret and create diagrams that represent 10 like base-ten units being composed into 1 unit of higher place value, e.g., 10 tenths as 1 one, and comprehend the word “bundle” to refer to this concept. - 6.5 Assessments and Related Lessons
Student Materials
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