AI Constitution

Resources · Learning tool

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.

Sign in to track your progress and get personalized recommendations. You can browse freely below.

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
← Back

Light & Seeing in the Dark

Science · Waves, Light & Sound · conceptual

Observe that objects in darkness can be seen only when illuminated by a light source

Sign in to track this

What mastery looks like

  • Explain that we need light to see objects — without any light source, it is completely dark
  • Describe an observation showing objects become visible only when light reaches them
  • Distinguish between light sources (sun, torch, lamp) and objects that just reflect light

Check your understanding

If you go into a completely dark room with Light & Seeing in the Dark, can they explain why they can't see anything until a torch is switched on?

Prerequisites

Required first

Unlocks (5 directly)