There are books, publications and web sites aimed at children as patients. Some are free and others are available to buy.
Clicsargent children's cancer charity produces and provides many factsheets and leaflets free of charge, including titles for parents and siblings as well as children.
Cancerbackup: Peppermint ward - a story for children with cancer
Wessex Cancer Trust: 'The child with cancer in school'-a booklet for teachers with a child cancer patient in their class: practical advice, what to say to other children, what to do in an emergency.
The National Cancer Institute (America) has produced an on-line booklet which includes a section on talking with children about their cancer.