Jonathan and Luke are in the same class, but they don’t like each other. They will be brought together by a book they read and a proposal from Ronnie the Raven. This will help them sort out their problems. But at what price? The boys don’t think too much about that. All the more so because some amazing adventures await them, sometimes dreadful and sometimes funny. There’s fun to be had when aliens land outside and decide to go to school. The Kingdom of Crunch with its master and dungeons is just plain awful. Will the boys come to realise what is really important in life? The text is accompanied by colourful illustrations by Marcin Minor, which wonderfully reflect the spirit of this story.
The ”brainteasers” series features tasks to develop a child’s spatial imagination. In order to solve the tasks from part 3 (age 10+) some awareness of geometry is an advantage. All six books can be recommended as fun to make you think, whether at home, in the waiting room, or during a trip. However, they can also be used successfully at school, during the lesson or in a mathematics club.