Books with title Mathematics in Nature, Space and Time

A teachers' book for math covering 'Mathematics in Nature', 'Pythagoras and Numbers', 'Platonic Solids' and 'Rhythm and Cycles'. Includes full color illustrations and diagrams throughout. A resource for Steiner-Waldorf teachers for math for Class 7 (age 12-13) and Class 8 (age 13-14). This book is a combined edition of Mathematics Around Us (for Class 7) and Mathematics in Space and Time (for Class 8).