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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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Area with Fractions

Mathematics · Fractions · representational

Find the area of a rectangle with fractional side lengths by tiling with unit-fraction squares; show that the area equals the product of the side lengths

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What mastery looks like

  • Tile a 2/3 × 3/4 rectangle with 1/12 squares and count to find area = 6/12 = 1/2
  • Explain why the number of unit-fraction tiles equals the product of the two fractions
  • Calculate the area of a rectangle with sides 1 1/2 and 2/3 using fraction multiplication

Check your understanding

If a piece of fabric is 2/3 m long and 3/4 m wide, can Area with Fractions work out its area — and explain how tiling it with tiny fraction-squares shows the same answer as multiplying?

Prerequisites

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