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# Multiplying Fractions of the Form a/b of c

### Collection Developed by:

Collection Credits

### Collection Funded by:

Funding for the VITAL/Ready to Teach collection was secured through the United States Department of Education under the Ready to Teach Program.

## Resources for this Lesson:

Connections

Everyday Math (2004)
Teacher Lesson Guide: pp. 105, 462, 920
Teacher Reference Manual: pp. 145-148.
Student Reference Book: pp. 69

Standards

to:

Not yet reviewed.

### Overview

In this Cyberchase activity, Harry gets a job in a candy store. Customers request boxes containing different types of truffles in differing proportions. This activity extends the problem into the case where there are a variety of numbers of candies in each box and students learn to multiply the fractional part times the number of candies per box to produce the number of candies of each type.

5-8

### Media Resources

Harry's Job at a Candy Store QuickTime Video

### Part I: Learning Activity

1. Read the following to your students: "In this activity, you will work with different proportions of items, and their fractional representations. In the Cyberchase video clip, Harry sells boxes of candy containing different proportions of types of truffles. Customers can choose four different types of truffles: hazelnut, raspberry, mocha, or caramel. Each box holds 8 truffles. In the chart on the handout, record the proportion of each type of truffle requested by each of the three customers."

2. Distribute the Multiplying Fractions and Whole Numbers Handout .

3. Ask the students to complete problem 1 on the handout (the data table) while they view the video clip. [Be prepared to play the video clip twice, to ensure that students note all of the data.]

4. Show the Harry's Job at a Candy Store QuickTime Video .

5. After the video clip is finished, ask the students to complete the rest of the handout.

6. Discuss handout answers with the students.

### Part II: Assessment

Assessment: Level A (proficiency): Students practice solving problems of the form (a/b) x c, in which a/b is a fraction and c is a whole number.

Assessment: Level B (above proficiency): Students apply their new fractional knowledge to solve story problems.