1. Comparing & Scaling Unit: 1.3 Comparing Ratios
1) Learning Target: To compare mixtures I can write part-to-part and part-to-whole ratios.
2) Homework: Inv. 1 Day 3 Complete p. 8 and CORRECT with the EDpuzzle
3) SS Test Retake today after school in Math Lab
4) Warm Up: (next page)
VOCABULARY : part-to-part ratio
part-to-whole ratio

2. Warm-Up:
Monica wants to make chocolate milk for her family. Monica likes it just as much chocolate as milk. Her brother likes it REALLY chocolatey. Her mother wants only milk. Her dad likes just a little chocolate. Help Monica determine the mix for each member of her family.
What ratio of chocolate is needed to make 1 C. of chocolate milk?
What ratio of milk is needed to make 1 C. of chocolate milk?
What is the total ratio of chocolate and milk?
Monica
Brother
Mom
Dad

3. VOCABULARY : part-to-part ratio
part-to-whole ratio

4. HW Review:
part-to-part
part
part
part-to-whole
part
whole
5:9 5/9 5 to 9
5:14 5/14 5 to 14
9:14 9/14 9 to 14
1:2 1/2 1 to 2
1:3 1/3 1 to 3
2:3 2/3 2 to 3
3:5 3/5 3 to 5
3:8 3/8 3 to 8
5:8 5/8 5 to 8

5. These are called: scaling ratios 3 5 8 10 4 6 2 4 12 9 18 10 15 25 336 54 30 9
These are called:
scaling ratios

6. Part-to-whole Ratio 1 : 4 Scale up 12 : 48 48 oz. pitcher
In table groups work on p
A. A typical can of o.j. concentrate holds 12 fluid oz. The standard recipe is:
How large of a pitcher will you need to hold the juice made from a typical can? (Show or explain your answer)
Part-to-whole Ratio 1 : 4
Scale up 12 : 48
48 oz. pitcher
Double check: 1 can concentrate = 12 oz cans water = 36 oz Total = 48 oz.

7. Part-to-whole Ratio 1 : 5 ⅓ Scale up 12 : 64 oz. 64 oz. pitcher
A typical can of lemonade concentrate holds 12 fluid oz.
The standard recipe is:
How large of a pitcher will you need to hold the lemonade made from a typical can? (Show or explain your answer)
Part-to-whole Ratio 1 : 5 ⅓
Scale up 12 : 64 oz.
64 oz. pitcher
Double check: 1 can concentrate = 12 oz ⅓ cans water = 52oz Total = 64 oz.

8. Part-to-whole Ratio 1 : 5 ⅓ Scale up 12 : 64 oz.
A 1/2‑gallon container will hold this exactly. Since 1 gallon is 128 oz, 1/2 gallon is 64 oz. Students might prefer a container that is not full to the top.

9. 1 : 4 (Part-to-whole) Scale up 16 : 64 64 oz. container
1 Gallon = 128 oz.
a.) The ratio of concentrate to mix is 1 : 4, so scaling this up, we have 16 oz : 16  × 4 oz. We need a 64‑ounce container. b0
1 : 3 (part to part)
1 : 4 (part to whole)
x : 128 (scale factor of 32)
32 : 128
She needs 2 (16 oz.) cans!

10. 15 oz. of lemonade concentrate
1 : 4 ⅓ (part to part)
1 : 5⅓ (part to whole)
scale factor of 15
15 oz : 80 oz
He needs a pitcher large enough to hold 80 oz.

11. Ounces (oz.) of concentrate
cans of concentrate
Ounces (oz.) of concentrate
she needs
juice made in
one recipe,
in cans
Ounces (oz.) of juice
she wants to make
There are a number of ways. One way is to think about these ratios as equivalent fractions. The denominator of the left fraction is multiplied by 32 to get the denominator of the right fraction. So, x=32×1=32
Hint?
Think of these ratios as equivalent fractions.

12. Comparing & Scaling Unit: 1.3 Comparing Ratios
Did I reach my Learning Target:
To compare mixtures I can write part-to-part and part-to-whole ratios.
Homework: Inv. 1 Day 3 Complete p. 8 and CORRECT with the EDpuzzle