math equations for kids

I am a high school math and physics teacher. I am working on developing an educational wiki for my department. The biggest hurdle we have is dealing with math equations. The equation editor plugin is a start but it could really use some work to make it user friendly for our students. Take a look at http://deapphysics.pbwiki.com/Equatio... for more of a description of the issues. Thanks.

Andy Buchanan