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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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Measuring temperature

Mathematics · Number Representation & Place Value · procedural

Use negative numbers in context (temperature, finance, sea level); calculate intervals across zero

What mastery looks like

  • The temperature falls from 3°C to −5°C — what is the drop? (8 degrees)
  • Calculate the difference between a bank balance of −£120 and £350
  • Order −7, −3, 0, 2, 5 on a number line and find the interval from −7 to 5

Check your understanding

If a bank account goes from −£45 to +£120, can Measuring temperature work out the total change — counting through zero to get £165?