Math Multiply Two
Math Multiply-Two is a game where you are given flashcards from 1 to 18 and you have a different type of cards with 2 multiplications (e. g. in the case of 18 you have 9*2, and in the case of 17 you have 8*2+1). This is a twist in the game of odd-even confusion and you have to be smart enough to play it. He's happy!