This volume presents instructions for 52 low-cost and indigenous teaching materials and devices developed during a second series of national workshops held in Bangladesh, Indonesia, the Republic of Korea, Papua New Guinea, Sri Lanka, Thailand, and the Socialist Republic of Viet Nam during 1979/1980, and also during the second Sub-Regional Workshop on Educational Technology held in Dacca in 1980. Each description lists the subject area, objectives, materials needed, and source. Instructions tell both how to make the item and how to use it, and describes possible modifications when applicable. The items described include hand-made maps, models and displays, educational toys and games, and science apparatus, such as a thermoscope, simple electroscope, simple microscope, osmoscope, plastic beaker, bamboo thermoflask, common pump, spring pendulum, and balances. Instructions are generously illustrated with line drawings. (LMM)