The website School Science Lessons contains a database of school science experiments and health information based on a revision, updating and expansion of the "New UNESCO source book for science teaching", 1979 edition, UNESCO, Paris. It contains experiments from the "low cost" science teaching movement, simplified versions of classical experiments, experiments using locally available substances and kitchen chemicals, and environmental science. Some experiments anticipate experiments usually done in senior high school or college classes. The contents of this website are free to download for educational purposes. The procedures and safety standards are consistent with instructions issued by The Department of Education, Training and Employment, State of Queensland, Australia.