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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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Simple Past, Present and Future

English · Grammar & Punctuation · procedural

Form and use the simple past, present, and future verb tenses consistently in writing

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What mastery looks like

  • Rewrite 'I walk to school' in past tense ('I walked') and future tense ('I will walk')
  • Identify and correct inconsistent tense in 'Yesterday she walks to the shop and bought milk'
  • Write a three-sentence paragraph maintaining consistent future tense throughout

Check your understanding

When Simple Past, Present and Future writes about something that happened yesterday, something happening now, and something that will happen tomorrow, do they change the verb correctly for each time — like "I walked", "I walk", and "I will walk"?

Prerequisites

Required first

Unlocks (3 directly)