## Monday, April 2, 2012

### Smartbords Interactive Lesson: Multiplication of a Fraction by Another Fraction

Lesson Objective:
Multiply a fraction by another fraction

Teachers' notes:
Subject: Math
Topic: Multiplying fractions
Prior knowledge: Concept of Fractions

Lesson notes:
This lesson activity can introduce or review concepts in multiplying fractions.

Contents of the Multiplication of a Fraction by Another Fraction Smart notebook file:

Review:
Translating a fraction into an equation

Problem Opener:
A farmer plowed 3/4 of his field. Then he planted rice on 2/3 of the plowed part. What fractional part of his field was planted with rice?

Questions:
What fraction of the field is plowed?
What fraction of the plowed part is planted?
What fraction of the field is part planted?
What equation translate "2/3 of 3/4 is 6/12"?
How do you multiply fractions?

How to Multiply Fractions
1. Multiply the numerators.
2. Multiply the denominators.
3. Reduce the fraction if necessary.

Practice Multiplying Fractions
On the next page, work out the answer to each problem and simplify.