The Rock Cycle — Igneous, Sedimentary, Metamorphic

Rocks transform. Lava cools → igneous. Weathered + compacted → sedimentary. Heat + pressure → metamorphic. All rocks can become any type. Indirect aim: geology, deep time, preparation for Earth science.

• Framework: Montessori
• Unit: Cultural Studies
• Learning area: Physical Science
• Level: Ages 7-9

Objectives

• Identify three rock types: igneous, sedimentary, metamorphic
• Understand how rocks transform over time
• Collect and classify local rocks
• Research tectonic forces

Materials

• Rock specimens of each type
• Rock cycle diagram
• Magnifying glass
• Local rock collection container

Instructions

1. Examine granite (igneous), sandstone (sedimentary), marble (metamorphic). 2. Describe each by texture. 3. The cycle: igneous weathered → sediment → sedimentary → buried → metamorphic → melted → igneous again. 4. Research local geology. 5. Collect rocks; classify. 6. Connect to Second Great Lesson's Earth formation. 7. Research volcanoes and tectonics. 8. File.

Educator tip

The rock cycle shows the Earth is alive — slow, but moving. Connect to deep geological time.

Assessment

Observe classification, cycle understanding, and collection engagement.

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