Describes the knowledge base of a group of science teachers as related to the structure, function, and development of their disciplines and their understanding of the nature of science. Twenty teachers participated in this study and their knowledge base was found lacking in all respects. The assumption was that teacher preparation programs are not…

Raises the question of what elementary and secondary teachers need to know to teach mathematics and science. Outlines the kind of subject matter knowledge teachers need to learn during their higher education years in mathematics and science. Contains 44 references. (DDR)