Primary schools are challenged to continuously improve their teachers' teaching and their students' learning. Through an iterative process, we have developed a method to stimulate teachers to collectively collect and analyze data, derive consequences from their analyses, take actions and evaluate outcomes. …

On the internet we see a continuously growing generation of web applications enabling anyone to create and publish online content in a simple way, to link content and to share it with others: wellknown instances include MySpace, Facebook, YouTube, Flickr, Wikipedia and Google Earth. The internet has …