Ratio: A comparison of 2 quantities that have the same measure.

eg.) Bows:Buttons = 2:4

Rate: A comparison of 2 quantities that have different units of measure.

eg.) 100 km per hour = 600 km/hour

Proportion: An equation which states that 2 ratios are equal.

eg.) 4/8 = 1/2

Part 2:

1. 5 hours to travel 360 kilometres is about

__72 km/h__. 360 divided by 5= 72.

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

__$21__. 0.28 multiplied by 75= 21.

Part 3:

What are 3 ways you can prove that equivalent ratio statements are true? (3/4 = 12,16 or 4/9 = 16/32)

1. Horizontal (divide or multiply)

2. Vertical (divide or multiply)

3. Cross Multiplication (multiply)

Part 4:

Below is a video that explains proportional representation used in political voting.

http://www.youtube.com/watch?v=u6hxkCwlK5k

**Does this seem fair?**No I feel that this is not fair as the first person stole more money but is sentenced to serve less time in prison than the second convict.**With what you know about proportion look and read what is in the image above. Does it seem just and fair?**No this is not fair or just as the proportion is $3 billion stolen:3 years in prison versus $100 stolen:15 years in prison.**Why have you made this choice?**This would be the same as for every $1 billion stolen:1 year is served versus for every $6.67 stolen:1 year is served.**What would you have done if you were the judge?**If I was the judge I would choose a set amount and equally apply it to both cases so that the more money stolen would result in more years served.

Nice post! Now I know what Rate, Proportion, and Ratio means! :)

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