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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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Why We Have Seasons

Science · Space Systems & Earth's History · conceptual

Explain that the seasons are caused by the tilt of Earth's axis during its orbit around the Sun, distinguishing this from the common misconception that seasons are caused by changing distance from the Sun

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What mastery looks like

  • Explains that Earth's axis is tilted at about 23.5° relative to its orbit
  • Describes how the tilted axis causes one hemisphere to receive more direct sunlight in summer and less in winter
  • Refutes the misconception that distance from the Sun causes seasons by noting Earth is actually slightly closer to the Sun in January

Check your understanding

If Why We Have Seasons was asked why the UK is hot in summer but Australia is cold at the same time, could they explain that it's not about being closer to the Sun but about which half of the Earth is tilted towards the Sun?

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