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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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Fractions of amounts (harder)

Mathematics · Fractions · procedural

Solve problems involving increasingly harder fractions to calculate quantities, including non-unit fractions where the answer is a whole number

What mastery looks like

  • Find 3/5 of 20
  • Calculate 2/3 of 18 and explain the two-step process (divide then multiply)
  • Solve: A bag has 24 sweets, 3/8 are red — how many red sweets?

Check your understanding

If 3/4 of a class of 28 pupils brought their homework in, can Fractions of amounts (harder) work out exactly how many pupils that is?