Integer Models

R59-Private Think Time: When you think about positive and negative numbers what models come to mind?
-below 0
-temperature outside (thermometer)
-Number lines (0 is in the middle, right is positive, left is negative)
-Any negative number plus
(-5+5=0)
-  -5 and 5 is the same distance (units) from zero
-color strips (red was positive, black was negative)
-Distance from 0 can be shown as absolute value [5]
-Is a positive plus a negative a negative?
-When you add a negative is it subtracting?


Similarities and differences?



Private Think Time: It is 2 degrees outside. At sunset the weatherman predicts  a five degree drop in temperature. Create a number sentence that matches the problem.

PTT Math Jeopardy- If a team of students played this type of game and the Super Brains had a score of -300 and the Rocket Scientists had a score of 150 and the Know-It-Alls had a score of -500 make some observations.

-The rocket scientists have more points than Super brains or No It Alls. 
-Rocket Scientists are the only team  whose score could have been gotten in 1 round (1 question)