## Lesson Plan # 7 - Fraction multiplication

1. (5 min) Mental Math
2. What is 30 times 4? [120]
3. What is 30 times 40? [1200]
4. What is 30 times 400? [12000]
5. What is 300 times 4? [1200]

2. (5 min) Review of selected problems from Homework # 6 (<= 3 problems)
3. (15 min) Introduce fractions:
1. Discuss what a fraction is: a part of a whole, a number between zero and 1. It has a numerator and a denominator. The denominator is the number of parts the whole is cut up into. The numerator is the number of those parts that you have. Illustrate with a pizza drawn on the board. Cut the pizza into 8 pieces and ask students how many pieces they can eat.
2. Handout the "Fraction rules" handout and discuss the following concepts (go through the examples for each):
1. Fraction multiplication
2. Converting mixed numbers to improper fractions
3. Have students turn over the handout to the "Area of a triangle" discussion and discuss the fraction version of the triangle area formula. Have them work the first fraction example near the bottom of the page.
4. (Remainder of class) In-class Exercise.
5. Hand out homework as students successfully complete the in-class exercise.