This design study aimed to develop and test a coherent set of guidelines for teacher professional development. Based on literature we settled for five main principles, and translated these into guidelines for a teacher professional development program. To realize (1) feedback on classroom practice we …

People can not live without other people. A person is always influenced, whether this is by the environment, the situation or the people(Arson, Wilson, Akert, 2005). Each way of behaviour is a reaction on the behaviour of someone else(Wijsman, 2001). Also behaviour is influenced by many factors such …