Dos webs que he descobert per este post:
Teachers’ domain: http://www.teachersdomain.org/
Teachers’ Domain is a free digital media service for educational use from public broadcasting and its partners. You’ll find thousands of media resources, support materials, and tools for classroom lessons, individualized learning programs, and teacher professional learning communities.
Science Monster: http://www.sciencemonster.com/index.html
A website with lots of resources and ideas for Science. Topics are devided in different sections: Earth science, Chemistry, Technology, Games, etc.