Physics for ages 12-14 Chemistry for ages 12-13 Roy Wilkinson outlines the background and practical guidelines for teaching these subjects: 6th grade--sound, light, heat, magnetism, electricity 7th grade--6th-grade subjects continued; mechanics, chemistry. Describe the work of factories and transport showing how physics, chemistry, geography, and natural science are interwoven. 8th grade--hydraulics, aeromechanics; practical applications of what has been studied in 6th and 7th grades: meteorology, climatology, chemistry Contents: Introduction Sound Light and Color Heat Magnetism and Electricity Mechanics Hydraulics Pneumatics Meteorology and Climatology Combustion Salts and Salt-formation The Metals The Organic World The Nature of Substance