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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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Verb Voice and Mood

English · Grammar & Punctuation · conceptual

Understand and use active and passive voice deliberately, and recognise verb moods (indicative, imperative, subjunctive, conditional) and their effects — choosing the appropriate voice and mood for purpose and audience

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What mastery looks like

  • Rewrite an active sentence in the passive voice and explain when the passive is more appropriate
  • Identify the subjunctive mood in a formal text (e.g., 'If I were...', 'It is essential that he be...')
  • Explain why a scientific report typically uses passive voice while a personal narrative uses active

Check your understanding

When Verb Voice and Mood writes a formal report or analysis, can they choose between active and passive voice deliberately — for example, using passive voice in a science write-up to sound objective and impersonal?

Prerequisites

Required first

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