Compares the effectiveness of two instructional models in bringing about a valid understanding of science concepts in prospective elementary teachers. Describes the two instructional models; an expository model and a learning cycle model. Concludes that college students understandings of science concepts may be improved using a combination of the…

Investigated attitudes toward lectures, self-concept, and locus of control of Egyptian middle school teachers with (N=40) and without (N=40) professional educational training. A set of more desirable attitudes toward lectures, higher self-concept, and greater internal locus of control were found in the group with professional training. (DH)