IM 7.5.3 Lesson: Changing Elevation
Draw arrows on the number line to represents the situation: The temperature was -5 degrees. Then the temperature rose 5 degrees.
Draw arrows on the number line to represents the situation: A climber was 30 feet above sea level. Then she descended 30 feet.
What’s the opposite of:
Running 150 feet east.
Jumping down 10 steps.
Pouring 8 gallons into a fish tank.
Explore the applet and then answer the questions.
A mountaineer is climbing on a cliff. She is 200 feet above the ground. If she climbs up, this will be a positive change. If she climbs down, this will be a negative change.
Complete the table.
Complete the table.Write an addition equation and draw a number line diagram for B. Include the starting elevation, change, and final elevation in your diagram.
A spelunker is down in a cave next to the cliff. If she climbs down deeper into the cave, this will be a negative change. If she climbs up, whether inside the cave or out of the cave and up the cliff, this will be a positive change. Complete the table below and afterwards, write an addition equation for C and D:
What does the expression tell us about the spelunker? What does the value of the expression tell us?