This book gives background and practical guidelines for teaching the following subjects:6th grade: Sound, light, heat, magnetism, electricity 7th grade: The above continued; Mechanics; Chemistry. Describe the work of factories and transport showing how physics, chemistry, geography, and natural science are interwoven.8th grade: Hydraulics, aero mechanics (pneumatics). Practical applications of what has been studied in 6th and 7th grades. Meteorology, climatology. Chemistry.Roy Wilkinson was an indefatigable teacher of children, lecturer, author, and inspirer of many people in the Waldorf movement in the UK and abroad, right up to his death at the age of 90 in 2007.