War strategy. When you’ve got a gun-enthusiastic, history buff for a big brother, you get lessons from Sun Tzu’s The Art of War to help prepare you for an epic battle between Star Wars figures, green Army men, dragons (from How to Train Your Dragon), a few My Little Pony ponies, and a handful of Polly Pockets in the living room upstairs. When you’re the mother of these two, you see critical thinking skills and spacial skills being developed. You see the older teaching and mentoring the younger. You see some abstract mathematical concepts being conveyed without either ever seeming to be aware of them. That’s just what you see at first glance. And that’s why you love self-directed homeschooling.