The book consists of beautiful colour and black and white photographs of toys from the past and compares them with modern-day toys. It also comes with clear explanatory text and captions, glossary, and further information.
This book explains the basic scientific principles of movement through everyday experiences and direct observation. Questions answered include: what do knees and elbows do; how do animals without legs move; and, can plants move?
-- Full-color activity books introducing basic concepts of math-- The "prehistoric" Og family brings math into amusing everyday situations-- Includes lots of fun ways to practice essential skills