This three-book series has been developed to meet the needs of students who are exploring concepts in calculus. The activities have a problem solving focus and are accompanied with worked examples and partially worked examples. Teacher pages set out ways of introducing each activity, teaching ideas and methods of reinforcement. Each task is related to a concept in calculus and, as students move through the task, concepts become progressively more complex. In order to increase their understanding the students can be encouraged to work co-operatively on problems by discussing the concepts presented in the books. This series is designed to provide a comprehensive resource to explore the mathematical concepts involved in calculus.