proportion post

Part 1

ratio: A comparison of two quantities that both have the same unit of measure.

Example

rate: Compares two quantities that both have different units

12 km per hour

Example 

proportion: A relationship clarifying that two ratios or rates are the same

Example

 

Part 2

1. 5 hours to travel 360 kilometers is about          km/h.

2.  Emma saves 28 cents of every dollar that she earns.  Emma earned $75 last week.  How much money did Emma save last week?

Part 3

Here are 3 ways you can prove 3/4 = 12/16

Way #1 Horizontal

Way #2
Vertical

Way #3
Cross multiply

Part 4

http://www.youtube.com/watch?v=8ouTOCG7lkQ