Have you checked out Verizon Thinkfinity's newest partner site, Wonderopolis? Each day, a simple wonder is posted for students and parents to explore and share together. How might an afterschool group or a community organization use Wonderpolis with students and parents?
Since Wonderopolis archives all of its daily wonders, I think that would be a great place for afterschool instructors to browse for topics that might be of interest to the students in their program. I was happy to see that as Wonderopolis populates its flash video for each day, that it is storing all those gems.
For those who might need help finding the archive, it is stored under the tab "Wonders" above the video image.