This was a training activity for pre-service teachers, which was divided into two phases. The first phase focused on how the use of ICT-Tools and Inquiry-based Science Education can be implemented in the biology class in general and which online inventory for science teacher exists (e.g. GreeNET, ODS, …). In the second phase the Best Practice “Rainforest and Climate Change” was demonstrated. The teachers were requested to test the Best Practice, especially the website with the Rainforest Data and evaluate some criteria related to the quality and the use of the website/Best Practice. Afterwards the teachers had to elaborate the use of the website to learn how to create their own environmental education lessons with ICT-Tools using the enquiry approach.