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Wednesday, October 10, 2012

Nathaniel's Proportion Post

Part One

Ratio- pair of numbers that compares different type of units.
Rate- Compares two quantities measured in different units.
Proportion- the equation that shows two ratios that are equal.

Part two

  1. 5 hours to travel 360 kilometers is about _____km/h.
  2. Answer: 60 x 5 is 300 300/360= 60 min/72 km
  3. Emma saves 28 cents of every dollar that she earns.  Emma earned $75 last week.  How much money did Emma save last week?
  4. Answer 28 cents  x 100 =2800/75 is 37.3 cents

Part 3
What are the three ways you can prove that equivalent ratio statements are true?
3/4 = 12/16  or 4/9 = 16/32 

1)cross multiplycation
2)3 x 4 is 12 and 4 x 4 is 16
3)4/9 is not equivilant

Part 4
Find a video about using proportion and embed it in your post.  Make sure you select the small size of the video. (Bonus Marks if you make your own video about proportion and embed it)

Part 5

We are starting to engage in discussions about social justice.  What do you think about this image below.  Use the link to copy it into your post.  Then answer the questions

  1. Does this seem fair? 
  2. No. But at least in jail they have shelter, food,  clothes, and water
  3. With what you know about proportion look and read what is in the image above.  Does it seem just and fair? 
  4. kind of Jail has free food, free water, free clothes, and free shelter
  5. Why have you made this choice? 
  6. I wouldn't want to go to jail but if I was homeless and I had nothing. I would go to jail myself 
  7. What would you have done if you were the judge? Give him a job


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