Let me know if you have any questions. By the way: Leave the Major System out when you teach your kids. They don't need to memorize them in order. Of course it would be cool but they can still add that later. Concentrate just on the shape and the name for starters. This is exactly what you can practice on Seterra.

If you need even more help than you can contact my company Thinkkniht where I work with world memory champion Johannes Mallow and give private memory coachings.