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Rocks and Minerals Lesson 3

Rocks and Minerals Lesson 3. BIG IDEA: Rocks and minerals have properties that can be: observed, tested, described, identified and recorded. Engaging Scenario.

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Rocks and Minerals Lesson 3

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  1. Rocks and MineralsLesson 3 BIG IDEA: Rocks and minerals have properties that can be: observed, tested, described, identified and recorded.

  2. Engaging Scenario Mr. Maxwell has dropped off more materials that he received from his geologist friend to help us identify the rocks and minerals we are investigating. We recently learned that geologists can use the process by which rocks are formed as a tool for identification, but there are 4 simple tests that he would like to share with us to help identify minerals. Today we are going to use the information and materials provided to investigate a property of minerals referred to as luster. A geologist will often observe and describe the luster of a mineral as an identification tool. What is the problem we need to solve? What do we need to investigate?

  3. Focus Question How can we…

  4. Word Wall Word Wall: Luster The appearance of an object and the way it reflects light.

  5. Prediction I think that we can…because… I think that we can describe the luster of a mineral to help us identify our minerals because some minerals are going to be shiny and reflect light while other minerals will be dull. (Class)

  6. Here are some materials that I have brought from home to help us prepare to observe and describe the luster of our minerals. If you focus on the appearance of these objects and the way they reflect light could you sort them in to 2 main groups? Why did you choose to sort the objects this way? When objects have a luster that is shiny like a polished piece of metal we refer to this as Metallic Luster. When the luster of an object is dull or glassy like the chalk or glass we refer to this as nonmetallic.

  7. Word Wall Word Wall: Nonmetallic Luster The reflection of light from many particles in the object. These objects do not shine like a polished surface. Word Wall: Luster The appearance of an object and the way it reflects light.

  8. Data Collection Today we are going to start by observing just specimens #1 through 10 from our principal’s collections. Using your magnifiers, examine the specimens. Sort them into two groups: metallic and nonmetallic. What would be the best way to organize this information?

  9. Review Are the 10 specimens you observed today rocks or minerals? How do you know?

  10. Quick Write • How can we classify minerals according to their luster? • Do you think this test alone will help us identify all of our minerals? Explain your thinking.

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