Wednesday, October 12, 2011

Alex Alfaro's proportion post

  • ratio: Above we state that 1/3 and 2/6 are equivalent fractions since they have the same decimal expansion. Thus, 1/3 and 2/6 are equivalent ratios since they represent the same amount.
  • rate: The rate at which your parents' car travels may be 55 miles per hour. The rate at which you type may be 50 words per minute.
  • proportion: Proportions can be used to predict information, such as: "a baseball player has a batting average of 0.300 (300 hits in 1000 at-bats)

  • 5 hours to travel 360 miles is about 72 mph

  • As a playgroup worker, if I increase the amount of apple juice I am serving at the playgroup from 25 ml to 100 ml, how much should I increase the the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with.
  • the orange juice 50ml 2x = 100ml

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

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?

  1. With what you know about proportion look and read what is in the image above. Does it seem just and fair? Why have you made this choice?
because he stole 100 $ and gave back what was left of it
and the other guy stole 3 billion and was in for 3 years

  1. What would you have done if you were the judge?
I would of gave the robber a month of jail even though he did give back the money because he did steal it
And the other guy should be in for 15 years because he stole 3 billion and didn't think of giving it back when he was arrested

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