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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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Mental multiplication and division (age 9+)

Mathematics · Multiplication & Division · procedural

Multiply and divide numbers mentally drawing upon known facts, including related facts and place-value adjustments

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What mastery looks like

  • Calculate 40 × 60 mentally by using 4 × 6 = 24 then appending zeros
  • Derive 7 × 15 by calculating 7 × 10 + 7 × 5
  • Calculate 360 ÷ 9 mentally using 36 ÷ 9 = 4

Check your understanding

Can Mental multiplication and division (age 9+) work out things like '24 × 5' or '360 ÷ 8' in their head — using clever connections to known facts rather than needing to write anything down?

Prerequisites

Required first

Unlocks (0 directly)

None.