This is an exciting novel that can be used by children in so many different ways. Primarily, the book can be read as a fun, exciting book that allows children to think the right way: How much money do they have? How do they spend and save money? When do they use a helmet when cycling and what are the consequences of not using one? Maintaining and looking after things - Will's bike is fixed by a member of the Grigan race from the Planet of Grigan...