The EU-HOU1 project aims at re-awakening the interest for science through astronomy and new technologies, by challenging middle and high school pupils. It relies on real observations acquired through an internet-based network of robotic optical and radio telescopes or with didactical tools such as webcams. Pupils manipulate and measure images in the classroom environment, using the specifically designed software SalsaJ, within pedagogical
trans-disciplinary resources constructed in close collaboration between researchers and teachers. Gathering eight European countries coordinated in France, EU-HOU is partly funded by the European Union. All its outputs are freely available on the Web, in English and the other languages involved. A European network of teachers is being developed through training sessions.