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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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Plural vs Possessive in Nouns

English · Grammar & Punctuation · conceptual

Distinguish between the plural -s suffix and the possessive -'s suffix in nouns

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What mastery looks like

  • Sort words like 'dogs', 'dog's', and 'dogs'' into plural, singular possessive, and plural possessive categories
  • Explain why 'the cats bowl' is incorrect and supply the correct form ('the cat's bowl' or 'the cats' bowl') for a given meaning
  • Write two sentences using the same noun — one as a plural and one as a possessive

Check your understanding

Can Plural vs Possessive in Nouns tell the difference between "the girls' coats" (belonging to many girls) and "the girls are coming" (just a plural) — and write each one correctly without mixing up the apostrophe?

Prerequisites

Required first

Unlocks (0 directly)

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