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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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Computing
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Comparing and ordering measurements

Mathematics · Measurement · procedural

Compare and order lengths, mass, and capacity and record results using >, <, and =

What mastery looks like

  • Measure two objects and write 45cm > 32cm
  • Order three containers by capacity after measuring each
  • Use = when two measurements are the same

Check your understanding

If Comparing and ordering measurements measures three pieces of string as 15 cm, 9 cm, and 22 cm, can they put them in order from shortest to longest — and write that using a < symbol?