We have this: http://www.amazon.com/Bigjigs-Toys-...53&sr=1-35&keywords=multiplication+tiles

DS loved playing with that - it made multiplication into a game...we would take turns picking a tile for the other person, and if you got the answer right, you got to keep the tile. Person with the most tiles at the end wins. smile

Also, I have no idea if this is a thing or not, but the fact that they are color-coded might help with the memorization if you have a strongly visual kid.