Tomás:

I had no idea what you and your daughter were up against! I think this is a problem that cries out for a HyperCard solution and if there's any way I can help let me know. However, you seem to have things well in hand so far.

I now see that any glucostack worth the silicon its printed on will be too complex to use as a HyperCard tutorial. But send me a rough draft and I'll be glad to offer suggestions. Let me know if you're ready to share it with the rest of the group. Good luck!