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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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How fossils form

Science · Space Systems & Earth's History · conceptual

Identify evidence from patterns in rock formations and fossils in rock layers to support an explanation for changes in a landscape over time

What mastery looks like

  • Explain that rock layers (strata) form over time, with the oldest at the bottom
  • Describe how fossils in different layers provide evidence of organisms that lived at different times
  • Use patterns in rock formations to explain how a landscape has changed over millions of years

Check your understanding

If How fossils form sees layers of rock in a cliff face, can they explain that the bottom layers are oldest and any fossils tell us what lived there long ago?

Prerequisites

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