Lesson 8.7 Fractions

Objectives: To guide further understanding of fractional parts of a whole; and to introduce unit fraction notation.

Math Journal 2, Pages 165, 168, 169, 170Home Link Masters (page 238)Math Masters pages 226, 239Minute Math pages 30, 49, and 102My Reference Book, pages 144 and 1451 dollar, 20 dimes, and 20 pennies per partnership2 dice per partnershipslatequarter-sheets of paperpaper shapes: a large circle, square, triangle, and semicircle out of 8&1/2" X 11" paper

for each childoptional enrichment --Math Masters, page 239, several copies for each child. Cut each in half.

Greater Than, Less Than, Equal reviewMental Math and Reflexes

P P P N N P P P

DDNN D D N N

Q D N P Q D ND

N N N D D

Q D P Q D N

P QND

Math Message and Math Journal 2, page 168Look at the drinking glasses on journal page 168. Which glass is half full?

Just because something is divided into two parts does not necessarily mean that each part is one-half of the whole.

Home Link 8.6 Follow-UpHow did you divide squares into halves and fourths?

halves

fourths

1/2 1/2

1/2

the 2 tells into how many parts the whole has been divided

the 1 tells how many of the equal part we are talking about

12

12

halves

Write 1/2 in each half of the half-full drinking glass on journal page 168.

1/4 1/4 1/4 1/4

the 4 tells into how many parts the whole has been divided

the 1 tells how many of the equal part we are talking about

14

14

fourths

A quarter is another way of saying one-fourth. A 25-cent coin is called a quarter because it is one-fourth of a dollar.

On page 165, label the crackers with 1/2 and 1/4.

Circle the rectangles on Journal page 168 that are divided into thirds.

1/4

One-Dollar Exchange Game

Materials: 1 dollar, 20 dimes, and 20 pennies

1 Place-Value Mat per player2 six-sided dice1 sheet of paper labeled

"Bank"

Players 2

Directions (also on pages 144 and 145 of My Reference Book)

1. Place all of the money in the Bank.

2. Players take turns.

Which of these shapes show equal parts?Write fractions on the equal parts.

Practice for Home Link 238

How do you know how many hundreds are in a number? Write, draw, or verbalize and answer.

Writing and Reasoning:

Folding Paper PizzasFold your circle, square, triangle, and

semi-circle into two equal parts. What was your strategy for making

halves? Are all the pizza halves the same size?

Journal 2, page 169Fractions

Math Boxes 8.7Math Journal 2, page 170

Home Link 8.7Math Masters, page 238

Making a Fraction BookMath Masters, page 239Fraction Book Pages