THE LEARNING AND TEACHING OF THE CONCEPTS ‘AMOUNT OF SUBSTANCE’ AND ‘MOLE’: A REVIEW OF THE LITERATURE

The importance of the concepts of ’amount of substance’ and ’mole’ is supported by the abundance in the last decade of research papers on the problem of the teaching and learning of these concepts. The present study attempts a review of the relevant bibliography, including recent investigations on both the difficulties of learning these concepts and the didactic alternatives that are provided from different perspectives. The literature reviewed shows that students have great difficulty in handling the above concepts. In addition, a clear discrepancy exists between what is assumed as correct by the scientific community and the thinking of educators. Finally, strategies for the teaching of th…