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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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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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The subjunctive mood

English · Grammar & Punctuation · procedural

Use the subjunctive form in formal writing and speech to express wishes, demands, suggestions, or hypothetical situations (e.g., 'If I were you', 'I suggest that he go', 'Were they to arrive')

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What mastery looks like

  • Write sentences using 'If I were' to express hypothetical conditions
  • Transform informal sentences into formal equivalents using subjunctive forms such as 'I recommend that she attend'
  • Identify subjunctive mood in formal texts such as legal documents or formal letters

Check your understanding

When The subjunctive mood writes a formal letter or a persuasive essay, can they use phrases like "If I were in charge…" or "The school suggests that every pupil attend…" to sound more formal and precise?

Prerequisites

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