# Clicked: Learn by Doing

> Interactive lessons you scroll through and play with. Work it out with your own hands first — then get the word for it.

Source: https://getclicked.app/ (the plain-text version of that page) · Language: en  
Other languages: [Português](https://getclicked.app/pt/index.md) · [Español](https://getclicked.app/es/index.md)

Interactive lessons you learn by doing — the moment it clicks.

Scroll through a lesson, turn the controls on the scene, and find the answer with your own hands before anyone gives it a name.

**Coming soon on the App Store**

## Work it out. Then name it.

1. **Guess** — A lesson starts from a question you already have an answer to — often the wrong one. Why is it hot in summer? Because the Earth is closer to the Sun, surely?
2. **Try** — The scene stays put while the page scrolls past it. Slide, drag and flip the controls on it. They obey the real physics, so what you find is real.
3. **Name it** — Only once you have found the effect with your own hands does the lesson give it its name. A short quiz at the end checks that it stuck, and blocks nothing.

## Meet Keri

Keri is your curious blob, and will be your companion as you learn.

## Start with the sky

### Astronomy (Course 1)

Block 1 · The Earth, its sky and what goes round it

Why what is overhead does not behave the way intuition says.

- Why is it hot in summer?
- How big is the Earth?
- What is eating the Moon?
- Where do the dishes point?
- Why does it not fall?
- Who lifts the ocean?

And a last lesson that tests the block by making you use it on something new.

### Finance (Coming soon)

The mechanics of money — why a longer loan costs more in the end, what compounding really does — worked out with your own hands.

Mechanics, not advice: no tips on what to buy.

## Fewer tricks, more truth

- **Real constraints.** A control moves only the way the real thing can. If a slider shows a dependence, the dependence is real — never a decoration laid over an animation.
- **Honest about science.** Settled facts are given as facts. Open questions are given as open: what is observed, which explanations exist, and why none is proven yet.
- **No points, no badges.** No scores, no rewards, no leaderboards. Your progress is a map of the course and the number of days in a row you came back.

## Try a lesson first

A demo lesson is open to every account, with no subscription. The courses unlock with one subscription through the App Store, monthly or yearly.

The App Store shows the prices and any introductory offer. You manage or cancel a subscription in your Apple account.

## The moment it clicks

Clicked is for people who would rather find a thing out than be told it.

---

Contact: [support@getclicked.app](mailto:support@getclicked.app) · [Privacy](https://getclicked.app/privacy/index.md)