Ratio - A ratio shows the relative sizes of two or more values
eg. Word ratio - b:g (boys and girls)
ratio - 1:2 ( for every one boy, there are 2 girls)
- Ratio Table
Rate - Rate compares two quantities measured in different units.
eg. 72 beats per minute or 72beats/min, in a heart rate.
Proportion - A proportion is equivalent fractions, ratios and rates.
eg. 2/4 = 4/8, 3:6 = 6:12, etc.
2. Unit Rate:
-1. 5 hours to travel 360 km is about 7.2km/h
How: ÷ 5
360 = 7.2
-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 $21.00 from her $75.00, she earned last week.
How: $0.28 x $75.00 = $21.00
3. Equivalent fractions:
- Whatever you do to the top, you do to the bottom.
3 = 12 4 = 16
4 16 9 32 (36) - this is actually wrong, if I were to put 9 x 4 it would equal 36. So technically it
x4 x4 should be 36 not 32.
- Does this seem fair? It is not fair because it wasn't a fair decision, for the man.
- Does it seem just and fair? It is not fair because if he were to be sentenced to 15 years of jail it would have been serving a first degree murder or kidnapping, but he only stole one, one hundred dollar bill which he surrendered only the day after, it should be only a year.
- Why have you made your choice?
- I think it is unfair because, even though he stole a hundred dollar bill, he still voluntarily surrendered only a day after.
- What would you do if you were the judge?
- I would've only sent him to 1 year in jail because he did surrender on his own and he used the money for himself to survive, not for selfish reasons.
- I'd sentence him for only 1 year because even though he did not use the money for bad reasons, it was still first degree robbery.
The question I came up with is:
How many people would you need to duplicate the height of the trees.
I measured the trees first and the height I came up with, was 17 cm.
I then measured the man which was 5.6 cm.
To get to 17, I first multiplied 5.6 by 3 and got 16.8.
I was 2 mm off of the measurement.
It takes around 3 people, or a little more, to duplicate the height of the trees.