AI Constitution

Resources · Learning tool

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.

Sign in to track your progress and get personalized recommendations. You can browse freely below.

Knowledge-graph map

Computing
Mastered Ready to learn LockedHover a node for its description · click to open
← Back

Estimating answers (age 7+)

Mathematics · Measurement · procedural

Estimate and read time with increasing accuracy to the nearest minute; record and compare time in terms of seconds, minutes, and hours

What mastery looks like

  • Read an analogue clock to the nearest minute
  • Estimate how long an activity takes in minutes or seconds
  • Compare two durations and determine which is longer

Check your understanding

If a TV show starts at 5:17 p.m. and ends at 5:43 p.m., can Estimating answers (age 7+) work out how long it lasted — and express that in minutes?