Learn anything
Prove it by teaching

Your knowledge graph lights up when you can explain simply. Stop faking — start understanding.

ducklab.vercel.app

Sound familiar?

You re-read but can't explain it

Highlighting and re-reading tricks your brain into thinking you know the material. You don't.

You watch tutorials but can't apply them

Passive consumption feels productive. But when you close the tab, the knowledge evaporates.

You pass quizzes but don't truly understand

Multiple choice rewards recognition, not comprehension. Real understanding means you can teach it.

The Feynman Technique, supercharged

Learning, not Faking

Richard Feynman said “If you can’t explain it simply, you don’t understand it well enough.” DuckLab turns this into a system: pick any topic, study it with AI-curated resources, then prove your understanding by teaching an AI duck that asks real questions.

Your knowledge graph is the proof. Green nodes mean you truly get it. Yellow means you’re getting there. Red means the duck caught you bluffing. No shortcuts — just real comprehension, visually proven.

ducklab.app/topic
DuckLab knowledge graph showing AI topic progression

How It Works

Five steps from “I think I know this” to “I can prove it.”

Step 1

Pick a topic

Choose any subject — from quantum physics to JavaScript closures.

Step 2

Get a knowledge graph

AI maps every concept and prerequisite into a visual dependency graph.

Step 3

Teach the duck

Explain each concept in your own words to a curious, skeptical AI duck.

Step 4

Get feedback

The duck catches jargon, exposes gaps, and asks follow-up questions.

Step 5

Track mastery

Watch your graph light up as you prove real understanding, node by node.

Everything you need to truly learn

Living curriculum

AI generates a concept dependency graph for any topic — with the best resources from across the web. Your curriculum adapts as you learn.

Teach-back assessment

Prove understanding by explaining concepts to a curious AI duck that catches jargon and exposes gaps.

Misconception detection

The duck identifies and corrects wrong mental models before they become deeply ingrained habits.

Visual knowledge graph

Watch your understanding grow in real time. Nodes light up green as you master them. See exactly where you're strong and where you need work.

Frequently Asked Questions