1.3+Measuring+Temperature+0910

Joshua Bodary Block D   19/4/10 Accentuate the Negative Investigation 1: Extending the Number Line

Big Idea:

Negative numbers help us to model many real world situations.

Essential Question #1 : How do I put positive and negative numbers in order?

Problem 1.3 Measuring temperature 

**A. Arrange the following temperatures in order from lowest to highest: **

-15< -8< -2< 0< +4< +12


 * B. The temperature reading on a thermometer is 5 ** **F. tell what the new reading will be if the temperature: **


 * 1. rises 10= ** **15 F** **2. Falls 2= ** **3 F** **3. falls 10= ** **-5 F** **4. rises 7 ****= ** 12 F


 * C. ****The temperature reading on the thermometer is -5 F. tell what the new reading will be if the temperature: **


 * 1. falls 3= ** **-**8 F **2. rises 3= ** **-**2 F **3. falls 10= ** **-**15 F **4. rises 10= ** 5 F


 * D. in 1-6, give the temperature halfway between the two given temperatures: **


 * <span style="font-family: "Calibri","sans-serif";">1. ** 5 F
 * <span style="font-family: "Calibri","sans-serif";">2. ** 5 F
 * <span style="font-family: "Calibri","sans-serif";">3. ** -5 F
 * <span style="font-family: "Calibri","sans-serif";">4. ** -10 F
 * <span style="font-family: "Calibri","sans-serif";">5. ** 0 F
 * <span style="font-family: "Calibri","sans-serif";">6. ** -11 F


 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">E. in 1-4 tell which temperature reading is farther than -2. **


 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">1. < 6 **
 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">2. = **
 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">3. <-5 **
 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">4.< 5 **


 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">F. explain how you determined your answer for part 4 of question E. **


 * <span style="font-family: "Calibri","sans-serif"; font-weight: normal;">Well its different for each person some need to use a number line, some just see it in their head and calculate it, some subtract and add. I happen to do a mix of those three. **