I haven't posted in awhile, and I'm sure there's been threads about this before, but my search wasn't turning up anything. I've recently switched to an online teaching position, and I'm looking for some great Algebra resources to use with my students. Specifically, I'm looking for interactive/manipulative sites. NLVM (http://nlvm.usu.edu/en/nav/vLibrary.html) is definitely a great one, but I'd really like to find somewhere I could send kids/parents to where they can get visual helps on specific Algebra topics. Something like this site: http://www.mathopenref.com/ only for Algebra instead of Geometry. Any ideas? Or links to another thread where this has already been discussed? Thanks for any help anyone can offer!
www.mathisfun.com or www.mathplayground.com. I teach at a middle school level, but I think at least the first one applies to all levels.
There's also Khan Academy on YouTube - the guy apparently started posting videos with math explanations because he got tired of explaining math person by person to all the members of his (huge) extended family, and about the time he got up to a couple thousand videos (!) YouTube gave him his own section to play in.
