The Commonwealth Association of Science, Technology and Mathematics Educators (CASTME). CASTME’s mission in the Commonwealth is to promote the experience in a relevant context, teaching, learning of STEM in a social and locally relevant context and to ensure that access to such learning is universally available. It produces a twice yearly newsletter to disseminate CASTME activities from around the world. It holds a memorial lecture in London Biannually in memory of Dennis Chrisman a staunch supporter of CASTME.

One of its projects at present is encouraging mothers and carers of young pre school children (children to recognise the everyday science in their lives and point such to children hence increasing science experiences, of both the adults and their children, as well as their communication literacy skills. It is interested in the science inherent in play, particularly in less affluent areas.