VIDEO CLIP SOURCES

EdVideo Online Free to NY teachers

Ed.Voicethread:  K-12 teacher and student-made slideshows, with images, video, and sound. 

Classroom Clipart Videos

Clips from the PBS show Nature

Dragonfly TV Kids' science show podcasts

TeacherTube:  YouTube for educators

TotLol:  a moderated YouTube community for young kids and their grownups.