1. Bell Ringer What is the information on this graph telling us?
Write your
answer on
White Board.

2. Scientific Graphs (Page 17)
Essential Question
*How are scientific graphs used to understand data?

3. 1. Bar graph - used for comparing different groups of data (amounts of data)
Type of Trash
Number of pieces
Cigarettes
14,000
Styrofoam
6,100
Plastic
5,220
Paper
4,963
Wood
1,091
Metal
982
Glass
511
Cloth
503
Rubber
210
Other
644

4. 1. Bar graph
Comedy Action Romance Drama Sci-Fi

5. 2. Pie graph - used for comparing percentages of a set of data
U.S. Electricity generation by source
Percentage %
Coal
44.9
Natural gas
23.4
Nuclear
20.3
Hydroelectric
6.9
Petroleum
1.0
Other renewables
3.6

6. 2. Pie graph

7. Bell Ringer What do you predict the temperature will be after 70
minutes?
Write your answer
and defend it on
White Board.

8. 3. Line Graph – shows data over changes in time, distance, or other measurements.25 20 15 10 5
Number of Pendulum Swings
Number of Pendulum Swings
(RATE) • • •
Length of Pendulum
Trial 1
Trial 2
Trial 3
Average
30 cm 23 22
22.7 (23)
40 cm 21
21.3 (21)
50 cm 19
Length of Pendulum (in cm)

9. **shows how the dependent variable responds to the independent variable.25 20 15 10 5
Number of Pendulum Swings
Number of Pendulum Swings
(RATE) • • •
Length of Pendulum
Trial 1
Trial 2
Trial 3
Average
30 cm 23 22
22.7 (23)
40 cm 21
21.3 (21)
50 cm 19
Length of Pendulum (in cm)

10. *Line graphs allow scientists to identify trends and make predictions25 20 15 10 5
Number of Pendulum Swings
Number of Pendulum Swings
(RATE) • • •
Length of Pendulum
Trial 1
Trial 2
Trial 3
Average
30 cm 23 22
22.7 (23)
40 cm 21
21.3 (21)
50 cm 19
Length of Pendulum (in cm)

11. *Line graphs allow scientists to identify trends and make predictions
Number of Pendulum Swings 25 20 15 10 5
• • •
Number of Pendulum Swings
(RATE)
Mass of
Pendulum
Trial 1
Trial 2
Trial 3
Average
14.2 g 22 21
(22)
28.7 g
42.8 g
Mass of Pendulum (in grams)

12. *Line graphs allow scientists to identify trends and make predictions

13. **When making a graph, numerical values must be in even increments
RIGHT WRONG
Number of Pendulum Swings 20 12 10 8 5 4 3 2 20 15 10 5
Length of Pendulum (in cm)

14. **When making a graph, numerical values must be in even increments

15. Important – Graphs must be Titled & Labeled
Oakleaf Junior High Students Favorite Types of Movies
Number of Students
Types of Movies

16. Important – Graphs must be Titled & Labeled
Oakleaf Junior High Students Favorite Types of Movies

17. Important – Graphs must be Titled & Labeled
Orange Park

18. Conclusion
Quick Write - How are scientific graphs used to understand data? Give at least one example.
*Write your answer below your notes.