"Raintree Freestyle" is a range of non-fiction books for the less able and reluctant reader aged between 11 and 14, with a reading age of 8 and 9 years old. They allow readers to encounter curriculum-linked topics at an appropriate reading level. The "Material Matters" strand provides a simple and clear introduction to materials, their properties and uses, featuring unusual and everyday examples that relate directly to the readers' lives. It offers coverage of the KS3 science curriculum and contains photographs, fact boxes, new words band on each spread, and search tips.