1. Representing data

2. Data tables are useful for organizing data into rows and columns.

4. Three Types of Graphs
Bar Graph
Circle Graph
Line Graph

6. What’s your favorite type of movie?
Comedy
Action
Horror
Drama
Romance
Other

7. Students’ Movie Preferences

8. Is the Earth getting warmer?

9. Average Global Temperatures from 1860-2000

10. Three Types of Graphs

11. What type of graph would you use when graphing...
Different salaries of careers in science?
Funding for NASA over the years?
Percentage of pollutants from humans in Lake Okeechobee?
BAR GRAPH? LINE GRAPH? or CIRCLE GRAPH?

12. Test Drive the New Model
Unit 1 Lesson 3 Representing Data
Test Drive the New Model
How do scientists evaluate models?
A scientific model can be a visual or mathematical representation of an object or system.
Models are useful for showing things that are too small, too large, or too complex to see easily.
Copyright © Houghton Mifflin Harcourt Publishing Company 12

13. How do scientists evaluate models?
Unit 1 Lesson 3 Representing Data
How do scientists evaluate models?
This plant cell model shows the parts of the cell more clearly than they can be seen under a microscope.
Copyright © Houghton Mifflin Harcourt Publishing Company 13

14. This Photo by Unknown Author is licensed under CC BY-NC-SA
This Photo by Unknown Author is licensed under CC BY-SA
This Photo by Unknown Author is licensed under CC BY

15. How do scientists evaluate models?
Unit 1 Lesson 3 Representing Data
How do scientists evaluate models?
Scientists use models in many ways.
Scientists can use models to make predictions before an investigation and to represent results after an investigation.
To use a model wisely, scientists must evaluate a model’s strengths and limitations.
Copyright © Houghton Mifflin Harcourt Publishing Company 15

16. How do scientists evaluate models?
Unit 1 Lesson 3 Representing Data
How do scientists evaluate models?
A model can be evaluated by how much it can explain.
Models can be simple or complex and can be made of any material.
The important thing is for a model to be a good representation of the real object or system.
Copyright © Houghton Mifflin Harcourt Publishing Company 16

17. How do scientists evaluate models?
Unit 1 Lesson 3 Representing Data
How do scientists evaluate models?
A model can be evaluated by how well it can adapt.
A good model that is based on evidence can even help scientists discover new information.
For example, when scientists built a model of DNA, they learned more about how genetic information is transmitted.
Copyright © Houghton Mifflin Harcourt Publishing Company 17

18. How do scientists evaluate models?
Unit 1 Lesson 3 Representing Data
How do scientists evaluate models?
A model can be evaluated by how many limitations it has.
Scientists can choose to use models that provide more information about certain things.
Sometimes, new data do not fit the model made by scientists.
Scientists must identify the ways in which a model does not match the real object or system.
Copyright © Houghton Mifflin Harcourt Publishing Company 18

19. Exit Ticket

20. Exit Ticket