Lesson #3 title: PART 3 = INTEGER story word problems using NUMBER LINES
Date:
THROUGH-LINE: Order - discovering
Integers are negative and positive numbers and ‘0’, expressed in temperatures, golf scores, ocean depths, & mountain heights.
OUTCOMES:
1. Place given integers on a number line, and explain how integers are ordered.
2. Describe contexts in which integers are used; e.g., on a thermometer.
MATERIAL NEEDED: highlighters, pencil, blue pen, calculator
Example #1:
Bernice got on the elevator on the 5th floor. It then went up 3 floors, down 10, up 4, and down 1 before
she left. On which floor did she exit the elevator?
Final answer:
Example #2:
Olivia entered the elevator that then went up 4 floors, down 6, down 2 more, up 8, up 1, and down 7
before she exited on the 2nd floor. On which floor did she ENTER the elevator?
Final answer:
Example #4: (obtained from Eduguide7 supplemental p.24)
On January 7th the temperature in Ottawa dropped from -3oC during the day to -13 oC at night. What was
the temperature change from day to night?
Final answer:
Example #5: (obtained from Eduguide6 p.25)
Draw a mental movie (number line!)
Final answer:
L(2)
YOUR TURN 
#1:
Wilhelm got on the elevator on the 8th floor, and then went down 6 floors, down 3 more
floors, up 7, down 2, up 4, down 5, up 2, up 4, down 1. On which floor did he exit?
Final answer:
#2:
Final answer:
#3:
#4:
The students were happy to see 8oC on Thursday morning. It quickly dropped 5o, then rose
15o, then dropped another 4o and the day ended with it rising 8o. What was the
temperature at the end of the day?
Final answer:
#5:
Final answer:
#6:
Final answer:
#7:
Final answer:
#8:(obtained from Eduguide7 supplemental p.24)
The temperature in Calgary was -29 oC. There was a wind chill that made it 8 oC colder. How cold did it
actually feel? (SUGGESTION: draw and label a number line)
Final answer:
#9:(obtained from Eduguide7 supplemental p.24)
Jason’s school bus does not run when the temperature is -40 oC or colder. On Wednesday, the
temperature was -32 oC with a wind chill of -9 oC. Will his bus run?
(SUGGESTION: draw and label a number line)
Final answer:
#10:(obtained from Eduguide7 supplemental p.25)
The temperature on Tuesday was -25 oC, then it fell 8 oC. What was the new temperature?
(SUGGESTION: draw and label a number line)
Final answer: