Summary
Daniel covers the three main rock types — igneous, sedimentary, and metamorphic — explaining how each forms. Includes the rock cycle, mineral vs. rock distinctions, and real-world examples. A thorough 11-minute earth science lesson for grades 2–4.
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Teaching resources
Discussion questions
Discussion
Rocks form in three different ways based on heat, pressure, and sediment.
- How is igneous rock formed? Name one example (granite, basalt, obsidian).
- What makes sedimentary rock different from the other types?
- What is the rock cycle? Draw a simple diagram.
Quick work-a-long
Vocabulary: igneous, sedimentary, metamorphic, rock cycle, mineral, magma, sediment, pressure.
Try it: Examine 3 rock samples (if available) or find images. Classify each as igneous, sedimentary, or metamorphic and give one reason why.