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# This lesson is on Multiplying Fractions using Manipulatives

Subject:

Math

Grades:

4, 5, 6

Title – Multiplying Fractions

By – Audrey Pruitt

Subject – Math

Grade Level – 4-6

Objectives:

- To introduce the concept of multiplying fractions

Teaching/Learning:

- Introduction:
- Pass out manipulatives
- Review fractions

- Modeling:
- Example: 3/4 x 2/3

- Fold paper (hotdog style) into 4ths
- Unfold and color in 3 of the 4 sections (3/4ths)

- Fold the same paper the other direction (hamburger style) into 3rds
- Unfold and color in (on the same side) 2 of the 3 new sections (2/3rds)

*This graphic only represents the additional folds and coloring. Because parts have already been folded and colored, the next graphic is the actual representation of your final product.**You should have a grid of 12 sections. The sections that have overlapping colors (represented by the orange squares in the graphic) are the answer to your problem.*

So you should have 6 sections

with overlapping shading.

6/12ths or 1/2.Sometimes the students have trouble with the coloring part so I have had them color one fraction on one side and one on the other and hold it up to see where they overlap.

- Guided Practice:
- I will walk around to each cluster and talk to the group to make sure they understand the problems and how to use this method.

- Independent Practice:
- I will have the students complete the problems using the paper folding technique.

- Closure Summary:
- Ask students if they see the pattern in the folded paper exercise.
- Talk about other methods of multiplying fractions.
- Remind students to always reduce unless otherwise noted.

- Extensions:
- I will have the students make up their own problems of multiplication of fractions and have them work them using the folded paper technique.

Being Prepared:

- Materials Needed:
- Blank paper (several for each student)
- 2 different colored crayons, markers, highlighters, etc for each student
- dry erase board
- dry erase markers (2 colors)

- Guiding Questions:
- What number sentence can you write to describe your picture?

Ex: 3/4 X 2/3 = 1/2 - What rule can you use in order to multiply fractions if you do not draw a picture?

Ex: Multiply the numerators and then multiply the denominators.

- What number sentence can you write to describe your picture?
- Assessment:
- I will collect the folded paper exercise and evaluate it based on completion of the activity.
- I will observe the students working in groups and discuss with them how multiplication of fractions works.

E-Mail Audrey !