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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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Knowledge-graph map

Computing
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Calculating with measurements

Mathematics · Measurement · procedural

Measure, compare, add, and subtract lengths (m/cm/mm), mass (kg/g), and volume/capacity (l/ml) using standard units

What mastery looks like

  • Measure a length in centimetres and millimetres
  • Weigh an object using grams and kilograms
  • Add two measurements in the same unit (e.g. 250 ml + 400 ml = 650 ml)

Check your understanding

If Calculating with measurements pours 350 ml into a jug and then adds another 275 ml, can they work out the total — and tell you how much more is needed to reach 1 litre?