Learning Science these days is much more about solving practical problems by doing investigations. At the same time, there is much less emphasis at the early stages on acquiring specialist knowledge than there used to be. This book sets out to help top primary and lower secondary pupils learn the skills of practical investigation, whilst minimising the teachers’ need to collect, prepare or purchase materials, a job which takes up more time and resources than most teachers can reasonably spare at present. The double-page ‘self-teaching’ units take one skill or topic at a time, and use only the kind of materials you could find in any classroom or home. Childrens’ immediate surroundings are made use of wherever possible.