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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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12-hour and 24-hour time

Mathematics · Measurement · procedural

Read, write, and convert time between analogue and digital 12-hour and 24-hour clocks

What mastery looks like

  • Convert 3:45 pm to 15:45 in 24-hour time
  • Read 19:30 and state the 12-hour equivalent as 7:30 pm
  • Match a set of 12-hour and 24-hour times

Check your understanding

If a train timetable shows a departure at 14:35, can 12-hour and 24-hour time convert that to 12-hour clock time — and tell you whether that's morning or afternoon?

Prerequisites

Required first

Unlocks (0 directly)

None.