Many different videos posted to relate to multiple topics in the sciences. Helps teachers find videos as an alternative to teaching material that may be confusing.
This is a great website for both teachers and students. It provides such a wide variety of information and can be a fun way for students to explore a museum without ever leaving the classroom.
May seem odd, but I like this site for the lecture series that is presented on topics in Biology, often by the authors of the textbook I use and other guests working on biology-related studies and the bioInteractive virtual labs.
Great site to help students choose or at least narrow their search, of famous scientists that I often use as a report early in the year to estimate the students level of literacy.