← Week 0

Warm-up5 min

How sure are you?

The idea. Knowing how sure you are is a different skill from being right.

  1. 1

    Two people both say “about twenty metres.” One has thrown a hundred paper planes. One has never thrown any.

  2. 2

    Same answer. Not the same amount of knowing.

  3. 3

    So there are two questions, always: what do you think, and how much would you bet on it.

  4. 4

    Three levels is enough: sure · fairly sure · just guessing. Say which one you are at.

  5. 5

    The useful part is not looking clever. It is that “just guessing” tells you exactly where to go and check.

Question 1 · Sort

Sort these into sure / fairly sure / just guessing: how many legs a spider has · how many pages are in the book nearest to you · how far a paper airplane can fly.

There is no single right sort — what matters is the reason. If everything landed in “sure”: count the spider’s legs in your head, you can picture it. Now picture the pages. You cannot, can you? That is the difference between the two piles.

Question 2 · Binary

You are “just guessing” about something. What is that a good reason to do?

Question 3 · Free choice + reason

Something you are fairly sure about — not certain. What would make you sure?

For the parent — Parent note

What we taught. Three levels of certainty, said out loud.

Why this first. The main conundrum asks for a number. Without this session, a child gives a number with no idea how much to trust it — which is exactly what a chatbot does.

What to listen for. Whether “just guessing” arrives without embarrassment. That is the goal.

A phrase worth borrowing at home. “How sure — sure, fairly sure, or guessing?”

What comes after this week

Week 0 belongs to no season and stays free. A season is eight weeks built the same way — three to five sessions, two conundrums and a project step each week, with three finished objects at the end.

Season 0 starts
Monday 21 September 2026
Founding seats open
Monday 7 September 2026 · 100 of them
Price
US$49.50 a season, or US$195 a year, for the first 100 families. US$99 and US$390 after that.