The third must-have school supply for homeschooling parents is a sense of humor. There will be times when the toilet backs up while you’re in the middle of explaining how fractions work, the doorbell rings while you’re up to your elbows in papier-mâché and the baby spits up all over your daughter’s favorite doll, leaving both children in tears. There’s even a good chance these things could happen all on the same day. If you have a choice, choose laughter.