Suggests that failure to learn is often the result of inappropriateness of level of instruction and deficiencies in instructional procedures and educational strategies, and differentiates between the functions of criterion referenced tests and diagnostic tests. Results are reported from two studies of the teaching of osmosis and photosynthesis.…

Summarizes a study into the feasibility, problems, benefits, and implications of using mastery learning in teaching French to students in Scottish secondary schools. Examples are provided of target objectives, specimen test materials, progress cards, and class activity records, and implications on class organization are discussed. (EAO)

Explains how curriculum materials of a modular course in high school microbiology developed for a kibbutz in Israel were disseminated to become part of the national science curriculum. The evolution and development of national and inservice workshops for science teachers to prepare them to teach this course are discussed. (MBR)

Describes the component parts of interactive video systems and suggests reasons for the increasing popularity of interactive video over other forms of instruction in education and training. A British project is described which is concerned with investigating the potential of interactive video for teaching foreign languages to secondary school…

Describes study that compared the attainment gains of Guyanan secondary school children in science and geography following two different learning regimes, i.e., systematically designed learning materials, and conventional teaching. Implications of the results for curriculum design and teacher training are discussed. (Author/LRW)