Central to the Salters course is the philosophy that chemistry takes place in the world around us. Using this idea the course has been developed as a context led programme. In order to access the necessary chemistry content students are introduced to chemical content (called Chemical Ideas in the student resources) through what are called Chemical Storylines. The Chemical Storylines cover a wide range of contexts. The current student resources integrate the Storylines and Ideas into one book for AS and either one or two books for the two years of the A level course.