Rock Investigation

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Grade Levels
3rd, 4th, 5th
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Lesson Description: Before beginning the lab review the three types of rocks: sedimentary, metamorphic, and igneous. Then, cut open a snickers bar and let the students observe the inside. Ask students what type of rock this could be a model of (sedimentary because of the layers). Next, give the students a plastic baggie with a mini snickers bar inside. Ask the students, “What is needed for a rock to be formed into a metamorphic rock?” (heat and pressure). Explain to the students that today they will be turning the snickers bar (sedimentary rock) into a metamorphic rock. They will use the heat from their body and pressure from their hands to create a metamorphic rock. Allow students to smash the snickers bar in the bag for about a minute and discuss the results (Students can now complete the table and questions 1-2 on the graphic organizer). Last, the teacher or adult should create a model for igneous rocks. Explain that currently the candle is a rock, but we are unsure of what type. (Light the candle a few minutes before performing the demonstration). Explain that is has been heated (lit) and now we are going to pour the melted rock (candle wax) onto the tin foil and let it cool. Ask the students what type of rock the rock has now become? Now, complete the last section of the organizer.

I have included Ohio Standards, key vocabulary, lesson description, materials needed, and a graphic organizer! Happy teaching!
Total Pages
2
Answer Key
N/A
Teaching Duration
45 Minutes

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Rock Investigation
Rock Investigation