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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
Mastered Ready to learn LockedHover a node for its description · click to open
Computers in Everyday L…Computers in Everyday Life — frontier Identifying computers in everyday life — not just laptops but phones, tablets, smart speakers, traffic lights, washing machines; what makes something a computerReal-World RobotsReal-World Robots — locked What a robot really is — not the sci-fi version; robots in factories, robot vacuum cleaners, robot arms in surgery; that robots follow instructions given by peopleSmart Versus Not-Smart…Smart Versus Not-Smart Devices — locked Sorting objects into 'smart' (can sense and respond) and 'not smart' (just sits there); a toaster vs a smart speaker; introduction to the idea that some machines can sense and respond to the worldStep-by-Step Instructio…Step-by-Step Instructions — locked Step-by-step instructions for everyday tasks (making a sandwich, brushing teeth); that if instructions are wrong or missing, things go wrong; computers follow instructions exactly
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Revising and editing (age 8+)

English · Writing Composition · meta

Read back your own writing critically and independently — notice where meaning is unclear, where a word could be stronger, or where the reader might be confused; make revisions without needing teacher prompts, using your own judgment about what is and isn't working

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What mastery looks like

  • Reread a paragraph silently and independently identify at least one place where meaning could be clearer or a word choice improved
  • Make a revision that goes beyond spelling/punctuation — changing a sentence for clarity or effect
  • Explain in their own words why they changed something ('I thought the reader wouldn't understand what I meant')

Check your understanding

Can Revising and editing (age 8+) read back something they've written — a story, a report, a letter — and spot a part that isn't quite right or could be better, all by themselves without you or a teacher pointing it out?

Prerequisites

Required first

Helpful

Unlocks (1 directly)