The technical reports summarized in this paper were prepared as part of a project designed to determine what is known about the teaching of cognitive skills and to formulate questions relating to such teaching for further research. Topics discussed in the 22 reports include the following: (1) teaching thinking; (2) Aristotle's logic; (3) a conceptual framework for the teaching of thinking skills; (4) a theory of plausible reasoning; (5) structure mapping; (6) counting, computing, and the representation of numbers; (7) computer programing as a vehicle for teaching thinking; (8) problem theory; (9) the teaching of informal reasoning; (10) the nature of intelligence; (11) microcomputers in education; (12) understanding understanding; (13) the teaching of learning strategies; (14) retrieval inhibition for part-list cuing; (15) teaching study strategies; (16) inquiry dialogue on the nature of lenses; (17) analogical development and the novice expert shift; (18) memory search of semantic categories following exposure to category instances; and (19) approaches to training information processing and problem solving skills. (FL)