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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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Sound Travels Through Materials

Science · Waves, Light & Sound · conceptual

Recognise that vibrations from sounds travel through a medium (solid, liquid, or gas) to the ear

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What mastery looks like

  • Explain that sound vibrations need a material (medium) to travel through — they can't travel in a vacuum
  • Give examples of sound travelling through different media: air, water, solid objects
  • Describe how a string telephone works: voice vibrates the cup, vibrations travel along the string to the other cup

Check your understanding

Can Sound Travels Through Materials explain why you can hear someone talking through a wall, and why sound travels through water when you're swimming underwater?

Prerequisites

Required first

Unlocks (3 directly)