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Science

Earth's Systems

10 lessons · topologically ordered (prerequisites first).

  1. 1
    Seasonal changes
    Ages 5–6 · high
  2. 2
    Properties of materials
    Ages 7–8 · high
  3. 5
    Evaporation and condensation
    Ages 7–9 · med
  4. 6
    How Organisms Shape Habitats
    Ages 5–6 · low
  5. 7
    Shapes of land and water
    Ages 7–8 · high
    • Seasonal changes (soft)
  6. 8
    Local weather patterns
    Ages 5–6 · med
    • Seasonal changes (hard)
  7. 9
    How fossils form
    Ages 7–8 · high
    • Properties of materials (hard)
  8. 10
    Rocks and soil
    Ages 7–8 · low
    • Properties of materials (hard)
  9. 11
    Where water is found on Earth
    Ages 7–8 · high
    • Shapes of land and water (hard)
  10. 12
    Preventing Erosion
    Ages 7–8 · med
    • Shapes of land and water (hard)