Sarah Meader on his wedding day in 2006. “When I set my mind to something, I really want to go all the way,” 37-year-old Sarah Meader says. Now it's time to activate or sign up for unlimited access!

Giving 16 first-graders each a large, bouncing ball might not sound like the best way to improve their focus in school. But in Sarah Meader's classroom at Karen Western Elementary School, students ...