Monday, November 16, 2009

How I Stopped an Alien Invasion Using Proportion

Today an alien landed on earth, me and my friend saw it snooping around and telling its home planet something. I said to my friend "Tell the government, I'll stall it."
I had to think fast, the alien looked pretty dumb so I thought about using something I learned today... proportions! That could slow him down. I walked up to the alien and started to talk about proportions.

- A proportion is a relationship thats says to rates or ratios are equal. A proportion can be expressed as a fraction.
60 sit-ups divide3 20 sit-ups 1 x5 5
__ = __
________ = ________ 2 x5 10

3 min divide3 1min

The alien just looked at me like I was crazy, but I talking.

Page 67

4.A) Three Dinner rolls cost 99c. 99c/3rolls = 33c/1roll

B) Seven identical objects have a mass of 14 kg. 7objects/14kg = 1object/2kg

Page 68

13. Two quarters have the same value of ten nickels. What is the value of five quarters in nickels?
2Q/10n = 5Q/25n

Page 69

27. If A:B = 4:5, find the ratio of 5a:7b. 5a:7b = 20:35.

Uh-oh I was running out of stuff to say, luckily my friend came back with the government. Now the alien is safely locked up in area 53.1.


Jemineth873 January 26, 2010 at 10:33 PM  

good job , on both story and explanation.


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