Computer Science for kids
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Computer Science for kids

Learning by doing

About the Book

The goal of this book is to make Computer Science accessible to kids. Computer Science is a complex field and kids have a short attention span. Taking this into account, this book introduces kids to the field of Computer Science in a gradual and incremental way, helping them learn how to program a computer. The book starts from the basics, such as how to write a basic Python program, and moves on to more advanced topics, such as how to write a web application and how the Internet works. All of this is done in an accessible way, so the reader can follow along regardless of whether they know how a computer works or not. The only thing that you need is a laptop and the will to learn new things!


The book assumes the reader knows how to perform very basic operations of a computer, such as using a browser to visit a website, follow instructions to download a program from a website etc. However, there are no prerequisites on programming at all, any kid with rudimentary knowledge of mathematics (addition/multiplication etc.) should be able to follow along. The book contains diagrams and simplified instruction steps to help with this. The target age is kids that are 10 years old or more, but slightly younger kids might also be able to enjoy the book.

Giving feedback

If you (or your kid) have read the book, please feel free to reach out and give me some feedback. I would love to hear what you liked or didn't like, so that I can improve the book.

About the Author

Dimos Raptis
Dimos Raptis

Dimos is a software engineer who has been designing, building and operating software systems over the last decade. He holds an MEng in Electrical and Computer Engineering from the National Technical University of Athens and an MSc in Software Engineering from Imperial College London. His endless curiosity usually leads him down big rabbit holes and when he's lucky, he re-emerges with a big bucket of knowledge. When he finds some time, he enjoys sharing this knowledge with others either through his blog or by writing books. He's the author of the books Distributed Systems for Practitioners and Computer Science for kids.

Table of Contents

Talking to a computer

Looking inside a computer

How computers talk to each other

Making our programs easier to use

How does the Internet work

That's just the beginning

Causes Supported

Code Club

A nationwide network of volunteer-led after school coding clubs for children aged 9-11.

We create projects for our volunteers to teach at after school coding clubs or at non-school venues such as libraries. The projects we make teach children how to program by showing them how to make computer games, animations and websites. Our volunteers go to their local club for an hour a week and teach one project a week. Each term the students will progress and learn more whilst at the same time using their imaginations and making creative projects. Terms 1 & 2 use Scratch to teach the basics of programming. Term 3 teaches the basics of web development using HTML and CSS. Term 4 teaches Python and so on. We’d like to put a Code Club in every single primary school in the country. There are over 21,000 primary schools in the UK, it’s a big task but we think we can do it!

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