How it works

Thirty minutes, once a week, at a table.

One lesson. One sitting. One idea, held long enough to stick.

The week

On the day it suits you, you get an email — addressed to you, never to your child — with what the lesson is about and what to have in the house. Usually nothing you’d need to buy. For Big Idea 01 it’s a book, three sheets of paper, a grapefruit, two cups and a bit of water.

You open the guide, skim the one-minute summary, and sit down together. Half an hour later something has happened that neither of you expected, and your child explains it at dinner.

The arc, across three lessons

Every Big Idea takes three weeks and moves through the same three stages:

Discover

Something is strange here

A fact that doesn’t fit what they expected, established with their own hands. Big Idea 01 starts with two sheets of paper falling at different speeds.

Go Deeper

Here’s why

The real explanation, at the level they can hold, with its horizon named. This is the week the child comes away with something most adults don’t know.

Use It

And here’s where it already is

Where the idea shows up in a phone, a plane, a body, a roller coaster. The week that answers “why does this matter?” without anyone having to ask.

The eleven beats

Inside a lesson, the shape is always the same. Predictable structure is a feature — after three weeks a child knows a prediction is coming and starts forming one before they’re asked.

The Mystery

A question whose obvious answer is wrong

The Prediction

They commit, out loud, before any explanation exists

First Contact

Hands on the thing. Often it confirms the wrong idea.

The Turn

One feature changes. The real cause becomes visible.

The Naming

The word arrives after the idea, never before

The Deeper Look

The explanation — and where a deeper picture begins

The Human Story

Who first reached for this idea, and why that was reasonable

The Layer Stack

What we thought → what it couldn’t reach → what we think now

Where You Meet It

Four places this is in the room right now

The Checkpoint

Retrieval, not assessment. Wrong answers get explained.

What’s Still Hidden

The lesson ends by opening a door

Two renderings, one source

The parent guide and the child’s version are generated from the same lesson file. They cannot drift apart, and neither is an afterthought.

Beat	With you reading	On their own
Prediction	You ask; they say it out loud; you write it down	They tap an option — and the explanation genuinely cannot load until they do
The Turn	You run the demo. The script tells you what not to say.	They run it themselves, with an on-screen version as backup
Checkpoint	Verbal. You have the answers and what each wrong one means.	Tapped. Two misses sends them back to redo the key demo.
Extras	The real science at your level, likely misconceptions, what to say when they push further	What to ask a grown-up for, listed before they start

Start the free module

What you actually have to do

You do not need to know the science. Every guide has a “the real science” section written for an adult with no physics background, and answers to the five questions your child is most likely to ask.
You do not need to be a teacher. The hardest instruction in Lesson 1 is say nothing for the next thirty seconds.
You do need to be there for the first one. After that, plenty of children run these alone.