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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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Classification Keys

Science · Ecosystems & Habitats · procedural

Explore and use classification keys to identify, group, and name living things in local and wider environments

What mastery looks like

  • Follow a branching classification key to identify an unknown organism
  • Create a simple yes/no classification key for a set of 6-8 organisms
  • Use a key to identify organisms in the local environment during a field activity

Check your understanding

Can Classification Keys use a simple yes/no key chart to work out the name of an insect or plant they've found outside?