Ages 8–10 · Investigate

Curious Minds

The age of "but why?" Finn turns every question into a real experiment — predict, test, explain. Most lessons come with something to build or print.

180 lessons
12–18 min each
36 experiments
52 printables

Start lesson 1 See all lessons

What Finn teaches

Four ways to figure things out.

Test it yourself

Make a prediction, run the experiment, explain the result.

How things work

Take apart bridges, engines, weather and the human body.

Code & logic

Block coding, loops and puzzles that teach real thinking.

Maths in the wild

Fractions, measuring and data using actual stuff around you.

The lesson path

180 lessons, in order.

Each unit ends with a build-it project. Experiment kits use only things you already have in the kitchen.

Unit 1 · Water, Ice & Air

14 lessons · about 3 hours total · 6 experiments

LESSON 1 Why does ice float? Experiment15 minKitchen kit START HERE LESSON 2 Why does water climb up a paper towel? Experiment14 minKitchen kit START

LESSON 3 Air has weight — prove it Experiment16 minRecord data LOCKED

LESSON 4 Make a cloud in a jar Experiment18 minUnit project LOCKED

Unit 2 · How Things Work

16 lessons · about 3h 30m total · 4 builds

LESSON 15 Why bridges don't fall down Engineering16 minBuild it LOCKED

LESSON 16 Your heart is a pump — build one Body17 minBuild it LOCKED

Unit 3 · Code & Logic

18 lessons · about 4 hours total · 5 projects

LESSON 31 Loops: making the computer repeat itself Coding15 minPuzzle LOCKED

LESSON 32 Find the bug in this program Coding14 minPuzzle LOCKED

Other ages

Growing out of this one?

AGES 2–4 Little Learners 120 lessons

AGES 5–7 Early Readers 240 lessons

AGES 11–13 Big Brains 160 lessons