Table of Contents

• Prequiz
• 1: Three tricks division can do
• Section 1: Ratios and Fractions
• 2: Finding Ratios
• 3: More uses for Ratios
• Section 2: Proportions and Percents
• 4: Proportions and Percents: Parts of the Whole
• 5: Absolute amounts from percents
• 6: Parts and wholes
• Section 3: Percent Change
• 7: Measuring how things change
• 8: Percent Change is not a direct comparison
• 9: Units, units, units
• Section 4: Biology
• 10: What's in your milk?
• 11: An experiment

Section 4: Biology

What's in your milk?

The pages that follow mix up all of the different measures from above, and even ask you to determine the best measure to use.

in 100 grams milk	Cow	Goat	Sheep	Water Buffalo
grams Protein	3.2	3.1	5.4	4.5
grams Fat (Saturated)	2.4	2.3	3.8	4.2
grams Fat (Mono-unsaturated)	1.1	0.8	1.5	1.7
grams Fat (Polyunsaturated)	0.1	0.1	0.3	0.2

 

What is the percentage of fat in cow's milk vs. water buffalo milk?

What is the ratio of mono-unsaturated to poly-unsaturated fat in cow's milk?

What percentage of fat is poly-unsaturated (the healthiest kind) in cow's milk?

Which of the four milks has the highest percentage of its fat as saturated fat?

If you switch from cow's milk to sheep's milk, how would your saturated fat consumption change?