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Technology from 10 to 16

Understand how things work.

A bike, a lock, a tap, a bridge: technology is everywhere. Bout first lets you play with how it works, then explains why, and gives you something to make for every topic, with cardboard and things you find at home.

No ads, no tracking, no account needed. The learning path and the first three topics are free.

Try it: change the teeth and watch how fast the second wheel turns

Gear ratio
i = 36 : 12 = 3
Driven gear
20 rpm
12
36
12 teeth drive 36 teeth: i = 3. The driven gear turns 20 times per minute, slower, with more force, the other way.
Title
Bout
Subject
Technology
Scale
1:1
Sheet
1/4

No account needed

How a topic works

First play, then understand, then make.

Every topic has the same blocks, always in this order. That way you know where you are.

  1. Why

    A question from everyday life. Why does a nut come loose so easily with a long spanner?

  2. See it

    A picture you play with: slide, choose, switch. You see how it works before you have a formula or a technical word for it.

  3. Get it

    The explanation in plain words, then the rule, and an example worked out step by step.

  4. Do it

    Exercises checked on the spot, with a hint and the solution. And a fresh exercise every time.

  5. Make it

    A build of 20 to 45 minutes with cardboard, paper and things from home, with a safety tip and a way to test what you made.

After that you read the pitfalls, where you meet it in real life, a piece of history and what to know first or learn next.

Four strands

From the drawing table to the solar panel.

See the learning path

Who it is for

For those who learn, help and teach.

  • For pupils

    Start with what you want to understand. Play with the picture until you see how it works, practise until you can do it, then build it yourself. Mistakes are information, not punishment.

    Start practising
  • For parents

    You no longer need to know it all yourself. Every topic explains it the way school does, with something to make together and a question to talk about at the table.

    Pick a topic
  • For teachers

    Show a picture in class, let pupils practise at their level and print a worksheet with the solutions.

    Make a worksheet

For schools

For schools and teachers.

Bout works in class without fuss: nothing to install, no pupil accounts, pictures you play with together on the board, builds with cheap materials and a worksheet ready in a minute.

  • Worksheets with the answers

    Pick a topic, a level and how many exercises. Print it, with the answers on a separate sheet.

  • Free for teachers

    Through Kaft, teachers use Bout for free, on the interactive whiteboard too.

  • No pupil accounts

    Pupils practise without logging in. What they have mastered stays on their own device.

  • Pictures and builds

    Every topic has a picture to play with and a safe build with cardboard and things from home, ready for the technology room.

Bout and Kaft

A fair price, and a family of apps.

Bout is part of Kaft, the book cover with an app for every subject. No ads and no tracking, so you pay with money and not with your data.

What does Bout cost?

The learning path and the first 3 topics are free. For all of Bout, choose one of these plans:

  • All of Bout€4 a month · €36 a year
  • Kaft bundle, all apps€8 a month · €69 a year

There is also a family plan, a school plan and a free social rate.

You sign in and pay on Kaft. After that, every topic in Bout opens.

All prices on Kaft

The Kaft family

Each app has its own subject and its own look, with the same way of working: understanding over cramming, calm and without ads.

Pick a topic and understand how it works.

Start with levers, gears, circuits or whatever comes up in the workshop tomorrow.

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