We might be saying the same thing since the only thing you need to memorize is the multiplication tables. ;-) How long can that possibly take? My grandsons are

We might be saying the same thing since the only thing you need to memorize is the multiplication tables. ;-) How long can that possibly take? My grandsons are between 3 and 8 - so they are in this age group. They are amazing at solving problems when it leads to something they want like winning a game against their brother. Puzzles are great for teaching math to this age group.