There’s a direct frankness to the way 6-year-olds see the world that would be easy to mistake for rudeness. But Daija Coleman knows better. On the first day of her first year as a first-grade teacher, Coleman knew her Jardine Elementary School students would be curious. Why was she in a wheelchair? Because her legs don’t work quite like theirs. Why did they always have to take the big ramp connecting the school’s first and second floors? Same reason.