# Interpreting Multiplication Scaling

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The lesson explores the difference between multiplying a whole number by a fraction and multiplying a whole number by a number greater than one. The lesson demonstrates with visual aides how numbers change as they are multiplied. The lesson may be used in conjunction with other math lessons related to multiplication.

## Interpreting Multiplication Scaling Lesson Plan Includes:

• Full Teacher Guidelines with Creative Teaching Ideas
• Instructional Content Pages about Interpreting Multiplication Scaling
• Hands-on homework activities giving students practice on Interpreting Multiplication Scaling
• Common Core State Standards

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### Description

The lesson explores the difference between multiplying a whole number by a fraction and multiplying a whole number by a number greater than one. The lesson demonstrates with visual aides how numbers change as they are multiplied. The lesson may be used in conjunction with other math lessons related to multiplication.

### Classroom Procedure:

1. Begin by explaining to students that the product of a number can get bigger or smaller depending upon the multiplicand.
2. While reading the content pages, reinforce patterns and give students additional examples of interpreting multiplication scaling problems in order to help them learn the new algorithm. Use the additional resources to enhance understanding.
3. Introduce the notes on interpreting multiplication scaling. Have students practice problems with and without fractions.  Use the additional resources to enhance understanding.
4. Have students practice problems so they can develop their own understanding.
5. Follow Activity page with students. Have students work in pairs.  Assign one student even and the other odd numbered questions.  Have them explain their reasoning for their answer to their partner.
6. Distribute Practice page. Check and review the students’ responses as a class.
7. Distribute the Homework page. Go over problems at the beginning of the next class to reinforce the algorithm.
8. In closing, ask students to think of a job or career where scaling using multiplication would be important to understand.
9. Allow for responses and discussion.

Common Core State Standards:

CCSS.Math.Content.5.NF.B.5

Class Sessions (45 minutes): 1 class session