Tuesday 10/31/17 Notebook entry: Have you ever built a model of something? What was it? How was your model different from the real object? 7 minutes Share out two Emphasize how model was different from real object Ask students: Why might a model be useful?

What is a model? Scientific models are physical, conceptual, or mathematical representations of real objects, systems, or events Scientific models are used to explain and predict the behavior of real objects or systems. Read “Scientific models are physical…”. Show one example of each type (physical, conceptual, mathematical). We will be using a physical model of the layers of the Earth today. Read “Scientific models are used…” 7 minutes

Modeling the Earth’s Layers We’ve never been to the center of the Earth. But we have developed models, based on our evidence, of what it looks like. As you explore using an egg as a model of the Earth, I want you to think specifically about what the egg CAN’T show us or tell us about Earth’s layers. 3 minutes

Group Tasks Materials Manager: The Materials Manager’s job is to gather and return all materials needed for the lab. Work-area Manager: Your job is to make sure your group’s work area is clean and tidy. Time Keeper: Your job is to make sure your group is on task. Make sure to keep track of what time it is and when clean-up begins. Question Manager: Your job is to manage any questions the group may have. Raise your hand to ask Mrs. Burke your group’s question. Explain Group Tasks: 3 minutes You will have 15 minutes for this activity.

Clean-up Materials Manager: Return the pie plate to the back table. Work-area Manager: Throw away the paper plate containing the egg pieces. Make sure your group’s area is clean and tidy. Time Keeper: Make sure your group knows how much time is remaining to clean up. Question Manager: Return your group’s science notebooks to the cupboard. Put your group’s Modeling the Earth sheets in the turn in drawer. Everyone: Wait in your seats for to be dismissed 5-10 minutes for clean-up

What is one thing you learned about models today? Before you go…answer the following questions on the back of your paper. What is one thing you learned about models today? What is one thing the egg model does not show about Earth’s Interior? Pass out notecards to each student. They must finish it and turn it in before they can leave. 5 min at the end of class.