"An excellent US-based site with many links for each of 8 topics. These are: Cells; Water; Osmosis; Atoms, Molecules and the Periodic Table; Building Molecules; Basic Processes (properties of solutions etc); and Pattern Matching (organic chemistry). Though entitled 'Biology', much of this would be taught within other areas of KS3/4 science in most UK schools. Each topic has wonderfully-detailed lesson plans, question-sheets etc and has 'all you need to know' to teach an excellent series of lessons! Recommended!..."
--schoolzone, educational intelligence, Great Britain