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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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Determiners and articles

English · Grammar & Punctuation · conceptual

Use determiners (articles a/an/the and demonstratives this/that/these/those) correctly before nouns

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What mastery looks like

  • Use 'a' before consonant sounds and 'an' before vowel sounds correctly: 'a ball', 'an apple'
  • Distinguish 'this/these' (near) from 'that/those' (far) when pointing to objects
  • Select the correct article (a/an/the) to complete a sentence

Check your understanding

When Determiners and articles writes about something nearby versus something far away, do they use the right word — saying "this book" for one in their hand and "that book" for one across the room?

Prerequisites

Required first

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