I read his mail and think about the difference from our way of managing "100math." After that, I wrote our ideas and sent mail. I hope my answer will be help for him. I'd like to write some of the examples of my replying. I wrote that we should change the order of all calculations that we let students solve. I also write that the duration of lesson should be 5 minutes to let all students keep their concentration. Moreover, I advised that we can give up that we teach how to make data with PC to teachers, preparing for after he go back to Japan. I think, we can show enough data to prove the effect of "100math" while we are staying in each country.
I'm looking forward to reading his answer.