CHAPTERS
When you are in class or at home you can choose between three different difficulties within a chapter. You can choose between the supporting path, normal path and the in-depth path.
Supporting path
If you choose to walk this path you will get extra help with the topics and the exercises.
Normal path
The normal path will give you exercises and theory with a similar difficulty to the book.
In-depth path
If you dare to follow the in-depth path you will challenge yourself to the fullest and learn extra things about the topics which aren't taught in your book.