# ﻿Points on the Number Line

Warmup

Activity #1

Read Temperature Values on a Thermometer.

Here are five thermometers. The first four thermometers show temperatures in Celsius. The last thermometer is missing some numbers.

• Use the thermometers below to answer the questions that follow.

Activity #2

If you need help completing this activity, you can pause the exercise and watch the video clip below before proceeding.

• Use the Line tool to draw a horizontal line. Always remember to click on to deselect an action before proceding to a new action.
• Mark a point in the middle area of the line with the Point tool and label it 0.​
• Use or to hide or delete all other labels.
• To the right of 0, continue using to make marks that are 1 unit apart. Label the tick marks 1, 2, 3. . . 10. This represents the positive side of your number line.​
• Click on the reflector tool and highlight all points on the other side of 0.​
• Click on O to mark points on the negative side of 0.
• Label the tick marks -1, -2, -3. . . -10. This represents the negative side of your number line.​
• Then use your number line to answer the questions below. ​