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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

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Knowing What You Don't Know

English · English Thinking · meta

Monitor your own vocabulary gaps — notice words you half-know, distinguish confident from uncertain knowledge, and develop strategies to resolve the uncertainty

What mastery looks like

  • Noticing Unfamiliar Words Assessment research (grade 2+)
  • word consciousness and vocabulary metacognition research
  • Building Word Knowledge e-Book (PMC 2019)

Check your understanding

When Knowing What You Don't Know comes across a word they half-know — where they can guess the meaning but aren't sure — do they notice that gap and do something about it, like looking it up or asking?