John Langrehr was a former academic at the University of South Australia. He has written over 25 books for teachers and students. Some have been translated into five languages. He has written over 80 articles in education journals. In 2005 he created a thinking program (www.jltp.net) for Early Childhood children in over 100 centres in Singapore. It is still being used. He still speaks about his passion for testing and teaching 3C (creative, curious, challenging) thinking.