1. Tips for creating a line graph

2. Mrs. McPhillips wanted to see how the temperature of the classroom changed during the day. She took the temperature of the classroom every 30 minutes.

3. y x

4.  The independent variable is the variable that the experimenter sets up before the experiment begins.  For this experiment it is = Time (hr).  It is on the x-axis.

5. y x Time (hr) Independent variable

6.  The dependent variable is the results or the measurements of your experiment.  It is Temperature (◦C).  It goes on the y –axis.

7. y x Time (hr) Dependent variable Temperature ( ◦ C)

8. Time (hr)Temperature (◦C) 020 0.521 122 1.522.5 223 2.523 323.5 3.524.2 424 4.524.5 5 5.525 626

9.  You can do a guess and check to find the scale or use the following formula: Scale ≥ (highest data #) / (# of boxes on your axis)

10. Time (hr) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Scale ≥ Highest # # boxes Scale ≥ 6 12 Scale ≥ 0.5 I will count by 0.5 0 1 2 3 4 5 6 Time (hr)

11. Scale ≥ Highest # # boxes Scale ≥ 26 17 Scale ≥ 1.529 I will count by 2 0 1 2 3 4 5 6 Time (hr) Temp (◦C) 20 21 22 22.5 23 23.5 24.2 24 24.5 25 26 0 10 20 30 Temperature ( ◦ C)

13. 0 1 2 3 4 5 6 Time (hr) 0 10 20 30 (x, y) (0, 20) Temperature ( ◦ C)

14. 0 1 2 3 4 5 6 Time (hr) 0 10 20 30 (0, 20) Temperature ( ◦ C)

15. 0 1 2 3 4 5 6 Time (hr) 0 10 20 30 (0, 20) Room 176’s Temperature during the school day Temperature ( ◦ C)

17. 0 1 2 3 4 5 6 Day 0 5 10 30 Rate of Plant Growth Height ( cm)