How to Model Fraction Division

Georgia Performance Standard: M5N4

Fifth Grade

Bob Gregg, Hollydale Elementary School, Cobb County September, 2009

Essential Questions

• Unit: How do I work with numbers that are part of a whole? How do I compute with fractions?

• Lesson: How many groups of the divisor can I get from the dividend?”

• Enduring Understanding: To divide fractions we ask how many groups of one fraction are found in the other fraction.

Vocabulary

• Dividend: (the amount you begin with)

• Divisor: (the size of each group you will make)

• Quotient: (the number of groups of the divisor that are in the dividend)

• Compute: (a math process like +, -. x, ÷

• Whole: (one complete thing)

Vocabulary

25 ÷ 5 = 5Dividend Divisor Quotient

3/4 ÷ 1/4 = N

Dividing Fractions

38

23

=X

Multiplying Fractions

÷32

916