Children learn best through experiencing a phenomenon before trying to understand it theoretically. This approach underpins this valuable resource book for teachers of physics to 13-14 year olds.Covering the basic principles of mechanics, acoustics, optics, heat, electricity and magnetism, von Mackensen ensures that all lessons and experiments are age-appropriate, and focus on developing an interest in and familiarity with the phenomena being described.Written specifically for class teachers in Waldorf schools, but accessible to any teacher who wants to bring a more phenomenon-based methodology to their classroom, the book starts by introducing the fields of physics appropriate to the age group, followed by a discussion of the main topics and detailed descriptions of simple experiments.This book is recently revised and reformatted in a handy workbook size for ease of teacher reference in preparing main lesson presentations and experiments, and is illustrated throughout.