I've only checked out part of the science section but this is a nice little resources so far. 

online file download and conversion service.  In Beta.

My students in physics classes always come in with a broad range of math ability. Through the class, I teach and reteach a lot of math and sometimes understanding the content gets lost in the stresses of learning the math/algebra. Though to truely understand the interplay between rates and proportions involved a strong math background helps the content and big picture can be grasped even if the math must be buoyed. I hope this program assists my students this year to be more confident with the math so the physics concepts do not get lost. 

stick on, removable whiteboard

Interesting web based replacement option for MS Office

Nice free alternative to the Glogster paid option. Only problem, no login required so no accountability from students. 

I'll need to check this out as an option for math review.

educational apps review community

I see a physics project here..

I plan on Attending this ISTE unlpugged session but first I think I'll check out that list of 50 ways to tell a story.  I have my first totally virtual class next year and I don't want to try to teach physics through lecture.  11:30 am - 12:00pm [Concurrent Session 6] Title: Beyond Lectures: How to Re-Invent Your Online Content Delivery in Face to Face, Hybrid and Fully Online Courses Description:Good pedagogy delivers content multiple ways to engage students and address different learning styles. Online learning, however, resides comfortably in lectures and discussion. This needn't be the case: learn to add free and easy tools to online content delivery that will appeal to all students and address the needs of multi modal learners. Inspired by Alan Levine's "50 Web 2.0 Ways to Tell a Story," this session will explore a variety of current tools that transform lecture delivery into an interactive multimedia activity that will engage myriad learning styles. Presenter: Pamela Kachka, MA.Ed.

If you are a dropbox user these addons can work to make sharing easier and your dropbox  even more useful.