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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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Estimating Angles

Mathematics · Geometry · procedural

Estimate and compare acute, obtuse, and reflex angles in degrees; classify angles by type and order them by size

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What mastery looks like

  • Estimate an angle as approximately 130° and classify it as obtuse
  • Identify a reflex angle in a diagram and estimate it as about 270°
  • Order four angles from smallest to largest by estimation before measuring

Check your understanding

If you show Estimating Angles three different angles drawn on paper, can they estimate which is biggest, label each as acute, obtuse, or reflex — and then check with a protractor?

Prerequisites

Required first

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