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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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Understanding angles (age 8+)

Mathematics · Measurement · procedural

Multiply side lengths to find areas of rectangles and represent whole-number products as rectangular areas

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What mastery looks like

  • Calculate the area of a 7 cm × 9 cm rectangle as 63 cm²
  • Draw a rectangle with area 36 square units and label its side lengths
  • Solve: A garden is 8 m by 5 m — what is its area?

Check your understanding

If Understanding angles (age 8+) needs to carpet a room that is 5 m by 4 m, can they work out how much carpet to buy — using multiplication rather than counting squares?

Prerequisites

Required first

Unlocks (3 directly)