To help our intense child deal with this frustration, our house has turned into the House of Math. We're quizzing him constantly, including a bombardment from all three of us over dinner.
Plus, they are now posted all around our kitchen. The 4's are in the half bathroom off the kitchen. Perhaps he will remember 4x8...bathroom mirror...purple...32!
Just to stay as geeky as possible, at dinner last night we quizzed both boys on the same multiplication problems, but in Roman numerals.