# Constructing Fractions

Thursday 11/13/08

### Do-now: Fractions in measurement review

For the area units that we used last week, we discovered that...
1 white = 4 blues1 blue = 4 reds
1. Fill in the following math sentences, using fractions:
1 blue =      white 1 red =      blue1 red =      white
2. Write out in words how you would say each of the following:
a) 5/8 red

b) 11/4 white

c) 2 3/7 blue

3. Convert the following into whites. Your answer will be a fraction or mixed number.
a) 3 blues =

b) 1 white + 5 reds =

c) 2 whites + 3 blues + 1 red

### Constructing fractions

On these problems, a "blue" or a "red" is one of the boxes that the bar is divided into. Fill in the requested measurements, and then circle the one that is larger.
1. 3/4 blue or 3/8 red

2. 5/8 red or 1/2 blue

3. 3/8 red or 1/4 blue

4. 7/8 blue or 1 1/4 red

5. 1/4 red or 2 3/4 blue

6. 1/2 blue or 1 7/8 red

7. 3/8 red or 1 3/4 blue

8. 7/8 red + 3/4 blue or 1 1/4 red + 1 1/8 blue

# Constructing Fractions Homework

1. Circle all of the boxes below that are exactly five eighths full.

2. Let's call the wide, narrow box in these pictures a "bar". Write in what measurement I am trying to show with each of the following:

3. In the previous problem...
a) Compare and contrast the measurements shown in parts a and b.

b) Compare and contrast the measurements shown in parts c and d.

4. Using the bar as a unit, draw each of the following measurements: