Learner motivation has been the strongest driving force in the development of relevant curriculum materials. Interestingly, the earliest examples of relevant chemistry and science courses were those developed for two quite different groups for whom science had little appeal: less academic pupils in secondary schools and non-science majors in tertiary education. Although one aim of the materials has been to provide learners with more interesting lessons, there is also the hope that this interest will be translated into a desire to study science subjects beyond the period when they are compulsory.