SummaryTwenty years after the statements of Ausubel, much research has been done on pupils’ ideas but little has been done on strategies that make use of these ideas in teaching, especially in biology education. Moreover little research, up until now, concentrates on concepts regarding Environmental Education. For Environmental Education the concepts of Cycles and Health are important. In this paper pupils’ ideas on these concepts are assessed and represented and common pupil ideas between the two concepts are discussed. A teaching strategy based upon pupils’ ideas is elaborated.