This publication covers the teaching of the various scientific disciplines, integrated and interdisciplinary science teaching, and education in technology, nutrition and health throughout the world. It emphasizes aspects of science and technology education, such as social relevance, teaching in relation to the local environment and links with industry and agriculture. It also includes the applications of the results of experimental projects and research. Articles include: "Innovators' dilemmas: recontextualizing science and technology education" (David Layton); "Recent developments in primary and lower secondary school science" (Wynne Harlen); "The teaching of mathematics in primary and secondary schools" (David Wheeler); "Community development through biology teaching" (Michael Atchia); "Biotechnology and its educational implications in school biology" (A. N. Rao); "The teaching of chemistry in different parts of the world" (Daniele Cros); "Difficulties in concept formation" (Andree Tiberghien); "Towards a practical physics: experiments that can be done at home and in other out-of-school situations" (Luis Carlos de Menezes); "Applications of calculators and computers in science and mathematics education" (Richard F. Shumway); "Science, technology and society: educational implications" (Albert V. Baez); "Science, technology and society courses: problems of implementation in school systems"; "The activities of Pioneer Centres in the USSR" (Olga Grekova); and "Stimulating innovation at the international level: Unesco's role in science and technology education." (CW)