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Unit 1 Lesson 1 How Do Scientists Investigate Questions? Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? Florida Benchmarks • 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. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? Florida Benchmarks • 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. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Is Science? • 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. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Is Science? • 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. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Do You See? • When you use your senses to notice details, you observe. • When you infer, you offer an explanation of what you observed. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? What Do You See? • Make observations about the objects in this picture. Then make observations about the objects in your classroom. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? Getting Answers! • Not all questions are science questions. • Science questions can be answered in many ways. • Two ways to answer science questions are exploring and investigating. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? 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? 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? 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? Investigating Answers • 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. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 1 How Do Scientists Investigate Questions? 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? 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? 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? 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? 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