Agenda Wed. Dec. 9

homework 13 p. 185 # 1 - 6, 11 - 13, 32 - 40

Correct homework

Ch. 4-1 Ex. 1 & 6 Unit Rates, Conversions & proportions

Move the blocks to fill in the blanks with our new terms.

A ____________ is a ratio that compares two units.

A _____________ is a _____________ per one given unit.

Rate

Unit Rate Rate

8.5 8.5 1=..

Converting a rate to a unit rate

The space shuttle Endeavor climbed 71 miles in about 8.5 minutes. Let's look at the shuttle's

rate of ascent.

71 miles8.5 minutes

Rate Unit Rate

8.4 miles1 minute

71 8.5 8.4=.. ?

Change miles to ____________

Making TWO changes

The shuttle orbits at 17,400 miles/hour. What is the rate in feet per second?

Change hour to ____________

Feet

Second

What known rate can you use to convert hour to second?

17,400 miles1 hour

X =1 hour

3600 seconds

1 hour

3600 seconds60 seconds1 minute

X60 minutes

1 hour=How did I get that

rate?

4.83 miles

1 second

What known rate can you use to convert miles to feet?

4.83 miles1 second

X =5280 feet

1 mile

25,502 feet

1 second

17,400 miles1 hour

25,502 feet

1 second=So, that

means...

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