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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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Reading and writing numbers to 20

Mathematics · Number Representation & Place Value · procedural

Read and write numerals from 0 to 20

What mastery looks like

  • Read any numeral 0–20 when shown it
  • Write numerals 0–20 legibly from dictation
  • Represent a number of objects with the correct written numeral

Check your understanding

Can Reading and writing numbers to 20 read a number like '17' written on paper and write it themselves — and do they know what each digit means?