If math facts are single digit calculations, why does your program teach teach multiplication up to 12 x 12 by default?
Good question! Although it is only essential to memorize the multiplication table up to 9 x 9, there are several things in our world that are in groups of 12, like months of the year or hours in a day. Memorizing the 10s and 11s is easy. Memorizing 12s makes working with dates and time (and dozens) much easier.
