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One of our goals for 2023 is simple: Software created using taxpayers’ money must be released as Free Software. Please help us to achieve this!

Hoiatus: sellest lehest puudub hetkel tõlge. All näed selle lehe originaali. Palun kasuta seda lehte, et näha, kuidas aidata tõlgetega või muul moel.

Ada & Zangemann - A tale of software, skateboards, and raspberry ice cream

Here you find additional information and resources about the book "Ada & Zangemann - A tale of software, skateboards, and raspberry ice cream" by Matthias Kirschner and Sandra Brandstätter.

A three way power adaptor, a tin of paint, a pair of pliers, a mouse,  a soldering iron, a phone, and a keyboard form a circle with a thin white curly line. Inside the circle, Ada and Zangemann face each other. Zangemann is an old man with glasses and Ada is a young girl with curly black hair.

About the book

The famous inventor Zangemann lives in a huge villa high above the city. Adults and children alike love his inventions and are desperate to have them. But then something happens: when Zangemann wants to take another close-up look at his inventions during a walk through the city, a child hits him in the shin with the skateboard. That hurts! Enraged, the inventor makes a momentous decision... The clever girl Ada sees through what is going on. Together with her friends, she forges a plan.

This illustrated book tells the story of the famous inventor Zangemann and the girl Ada, a curious tinkerer. Ada begins to experiment with hardware and software, and in the process realises how crucial it is for her and others to control technology.

A book that arouses children's interest in tinkering and encourages shaping technology. From age 6 to 106.

The book is currently available:

Book Reviews

"A rousing tale of self-reliance, community, and standing up to bullies...software freedom is human freedom!" - Cory Doctorow, Sci-Fi Author

"Introduces readers young and old to the power and peril of software. Behind it all is a backdrop of ethics of knowledge sharing upon which the arc of human history rides." - Vint Cerf, Computer Scientist and One of the Inventors of the Internet

"The book is a motivation for the first demo and a little bit of civil disobedience. It is a utopia of possibilities to make the world better with limited means and little money, and an example without moralistic finger-pointing, that control does not make happy." - Anna Biselli, Editor-in-Chief Netzpolitik.org

"Even as a non-child, I was captivated by the story from the first page to the last. Kudos to the author for packaging difficult topics such as monopolies, lobbyism, digital divide, software freedom, digital autonomy, IoT, consumer control, e-waste and much more in a child-friendly form in an easily understandable and exciting storyline." - Jörg Luther, chief editor of the German Linux-Magazin, LinuxUser, Raspberry Pi Geek

“What a fun read! I recognize myself in Ada at many moments.” - Isabela Fernandes, Executive Director, The Tor project

open book with night scene

Read all the reviews we have received.

“Ada & Zangemann brings a highly topical, technically relevant subject to children.” - Catharina Maracke, Chair of the Board, Open Source Initiative

“Software freedom is a critical component to having technology that we can rely on as a society, and it never is too early to learn about why it is so important. I can't wait to read this book to my kids!” - Karen Sandler, Executive Director, Software Freedom Conservancy

“In this hopeful story Ada and her friends join a movement that started back in 1983. Their courageous adventure of software freedom and learning how technology works is a wonderful way to introduce young people everywhere to the joys of tinkering!” - Zoë Kooyman, Executive Director, Free Software Foundation

Book readings

The author Matthias Kirschner has already given several readings of the book: At events for children and adults (from 6 to 106 years), in school classes, libraries and on other occasions. If you are are interested in a reading by the author or in other available languages by FSFE volunteers, please contact us at contact@fsfe.org.

Many children in the largest cinema room in Offenburg/Germany during a book reading
Author reading to over 150 3rd graders in the largest cinema room of Offenburg. CC-BY-SA Stadt Offenburg / herrfichtner

How to learn coding?

There are many resources out which help young people to learn programming. Our community is gathering more information about that topic on our wiki page, and we invite you to help us with amending and keeping this up-to-date.

Let's draw

Girl repairing devices at a workbench
Ada repairing devices at a workbench. One out of eight freely available drawing templates

We provide some drawing templates for children. You can download the PDF file and print out the pages you like.

Stickers and postcards for all

A die-cut sticker of Zangemann protagonist in the children's book Ada and Zangemann - A tale of software, skateboards, and raspberry ice cream.
A die-cut sticker of Ada protagonist in the children's book Ada and Zangemann - A tale of software, skateboards, and raspberry ice cream.

We provide some "Ada & Zangemann" stickers. You can order them at no cost on our information material page. Get them all!

Get active

 Illustration of diverse crowd protesting. Protesters shout cheerfully and hold icecream cones. Slogans write: Do your homework mr President and we will do ours - Hacking 4 Freedom - Don't wreck our tech - There is no code B - They are young and need the code. A robot, two birds, and three dogs accompany the protest.
Illustration from the book. Get a poster or a postcard with the illustration at no cost.

Would you like to raise awareness for software freedom? If you liked the book, here are some ideas.

Dive into software freedom

You would like to receive news about "Ada & Zangemann", for example about new stickers or other materials, new translations, or other information about the book? You can subscribe to the FSFE's mailings and not miss this information as well as also receiving general information about software freedom and the FSFE's work.

Already a teenager?

Three teenagers standing in a hackerspace

Graphic by Lisa Schmidt, CC-BY-SA 4.0

For teenagers who are already experienced in programming, the FSFE is organising the "Youth hacking for freedom" coding competition. Please help us to promote this activity and encourage teenagers to start programming.