Representing data

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

Three Types of Graphs Bar Graph Circle Graph Line Graph

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

Students’ Movie Preferences

Is the Earth getting warmer?

Average Global Temperatures from 1860-2000

Three Types of Graphs

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?

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

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

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

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

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

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

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

Exit Ticket

Exit Ticket