This video segment adapted from NOVA scienceNOW reviews the debate over the definition of a planet. Take a test drive of the open access Teachers’ Domain resource What is a Planet here.

On June 1, 2007 Teachers’ Domain http://www.teachersdomain.org/ announced the launch of Open Educational Resources–video segments, interactive activities, and lesson plans in earth science, engineering, life science, and physical science that are downloadable, sharable, and re-mixable. Whether you download them to your own computer, share them with your students and colleagues, or edit them to create your own educational media, Teachers’ Domain is proud to provide high-quality materials to help you learn and teach!

The Teachers’ Domain Collections are FREE for anyone to use and are comprised of carefully chosen and edited online resources, multimedia learning tools, and corresponding lesson plans from NOVA and other award-winning PBS programs. Currently providing more than 1,000 resources, a third of which will now be available as Open Educational Resources, Teachers’ Domain covers all key topics in science and is now expanding into the humanities. To see Teachers’ Domain’s new Open Educational Resources in action, please click here to view an exciting sample resource entitled What is a Planet?.

Teachers’ Domain is an online educational service with two related components–collections and courses–that help teachers enhance their students’ learning experiences and advance their own teaching skills. It’s free and easy to register. Find fresh new ideas to get your students excited and engaged in learning!

Funding for presenting Open Educational Resources on Teachers’ Domain is provided by The William and Flora Hewlett Foundation. Teachers’ Domain is the National Science Digital Library Pathway http://nsdl.org/about/?pager=pathways to Multimedia Resources for the Classroom, funded by the National Science Foundation.

Teacher’s Domain: multimedia resources for the …