I explored mangahigh.com earlier today and it turns out the only game I tested works on iPads. The rest need adobe flash. I thought I had finally found a place that had games that worked on the iPad. I should have explored it in more detail but I was at training and tried the one game so I assumed that they all would work. Rats. I apologize for this.
On the other hand, I just wondered through hippocampus.org. The have quite a few videos to instruct, show examples, etc. In addition to mathematics, it offers various sciences, social sciences and English. This website would be good for a blended classroom and would allow students to get additional help with their