Run popular math games website for kids looking for good HTML5 math games

This is Johnnie from Johnnie’s Math Page- I have run a very popular math game website for kids for some time. Most of my material is Flash and I want to move to HTML5 math games. Interested in good quality math games and activities for elementary aged children. Take a look at my site to get an idea of what would be worthwhile. - thanks- Johnnie

I am very interested in your requirements.
I ever converted Flash games to HTML5 games.

I could do it. Could you provide more details?