When I was a kid, my dad just said flash cards with me. Everything up through division. When we'd be out in public doing errands and such, he'd quiz me while we

When I was a kid, my dad just said flash cards with me. Everything up through division. When we'd be out in public doing errands and such, he'd quiz me while we were out. Really simple to do, and I think it worked pretty well. Whenever I see parents doing that with their kids in public, I get a smile.