The pupils' books are designed to support, extend and reinforce the work generated by the teachers' guides. This title is about time and space. Other features include: essential, but difficult to find, secondary source materials at the appropriate level; information about scientific inventions and discoveries; scientific facts or "WOWS"; thought-provoking and amusing stories and poems; games and word play; and simple and unusual extension and reinforcement activities.The pupils' books are designed to support, extend and reinforce the work generated by the teachers' guides. This title is about time and space. Other features include: essential, but difficult to find, secondary source materials at the appropriate level; information about scientific inventions and discoveries; scientific facts or "WOWS"; thought-provoking and amusing stories and poems; games and word play; and simple and unusual extension and reinforcement activities.