1. Unit 1 Lesson 1 How Do Scientists Investigate Questions? Copyright © Houghton Mifflin Harcourt Publishing Company

2. Unit 1 Lesson 1 How Do Scientists Investigate Questions? Florida Benchmarks Copyright © Houghton Mifflin Harcourt Publishing Company SC.3.N.1.1 Raise questions about the natural world, investigate them individually and in teams through free exploration and systematic investigations, and generate appropriate explanations based on those explorations. SC.3.N.1.6 Infer based on observation. SC.3.N.3.1 Recognize that words in science can have different or more specific meanings than their use in everyday language; for example, energy, cell, heat/cold, and evidence.

3. Unit 1 Lesson 1 How Do Scientists Investigate Questions? Florida Benchmarks Copyright © Houghton Mifflin Harcourt Publishing Company SC.3.N.3.2 Recognize that scientists use models to help understand and explain how things work. SC.3.N.3.3 Recognize that all models are approximations of natural phenomena; as such, they do not perfectly account for all observations.

4. Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Is Science? Copyright © Houghton Mifflin Harcourt Publishing Company Science is a way of looking at the world and thinking about it. Scientists ask questions about the world. Scientists do investigations to answer their questions.

5. Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Is Science? Copyright © Houghton Mifflin Harcourt Publishing Company Some science investigations are simple, such as watching animals play. Some science investigations take a lot of planning. When you ask questions and plan investigations to answer them, you act like a scientist.

6. Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Do You See? Copyright © Houghton Mifflin Harcourt Publishing Company When you use your senses to notice details, you observe. When you infer, you offer an explanation of what you observed.

7. Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Do You See? Copyright © Houghton Mifflin Harcourt Publishing Company Make observations about the objects in this picture. Then make observations about the objects in your classroom.

8. Unit 1 Lesson 1 How Do Scientists Investigate Questions? Getting Answers! Copyright © Houghton Mifflin Harcourt Publishing Company Not all questions are science questions. Science questions can be answered in many ways. Two ways to answer science questions are exploring and investigating.

9. Exploring When you explore, you make observations of the world around you. When you explore, you may predict what will happen when you do something. When you predict, you use what you know to guess what will happen in the future. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

10. Exploring You can use observations to classify, or group, objects. For example, you could classify objects by whether they sink or float in water. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

11. Investigating In science, an investigation is a planned way of answering science questions. When you do an investigation, you may ask cause-and-effect questions. In an investigation, you may use models. Models represent real objects but are easier to study. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

12. Investigating Answers Copyright © Houghton Mifflin Harcourt Publishing Company There are many steps a scientist may take during an investigation. Five steps in science investigations are asking a question, hypothesizing, predicting and planning, experimenting, and drawing conclusions. Scientists may use some or all steps during an investigation.

13. Ask a Question Many science investigations start with a question. Ask a science question about the things in the picture. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

14. Hypothesize A hypothesis is a possible answer to a science question. You have to be able to test a hypothesis. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

15. Predict and Plan an Investigation Predict what you will observe if your hypothesis is correct. Plan an investigation to test your hypothesis. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

16. Experiment In science, an experiment is a test you do to gather evidence. In an experiment, only one thing should change at a time. The thing that changes is the variable. When you do an experiment, you make observations you can use to test your hypothesis. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?

17. Draw Conclusions After you do your investigation, study your results. Draw a conclusion about your results. Ask yourself, “Do the results support my hypothesis?” Share your conclusion with others. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions?