Contains occasional broken type

An interpretatve summary is given of educational research that has implications for college science education. The research topics include: behavioral objectives, individualized instructicn, mastery learning, expository versus discovery learning, Piaget and fcrmal thought, and proportional thinking. specific examples taken from college-level chemistry are discussed to illustrate the prr:hlems of teaching concepts and classification. (MH) Documents acquired by ERIC include many informal unpublished * materials nct available from other sources. ERIC makes every effort * * to obtain the best copy available. Nevertheless, items of marginal * * reproducibility are often encountered and this affects the quality * * of the micrcfiche and hardcopy reproductions ERIC makes available * via the ERIC Document Reproduction Service (EDRS). EDRS is not * responsible for the quality of the original document. Reproductions * * supplied by EDRS are the best that can be made from the original