Our children don't lose their curiosity once they enter school, but they often lose their drive to learn. Once we start treating the outdoors as a living laboratory, children will continue exploring the things that attracted their attention in the first place.
If we want future adults to learn to use mathematics then we must show them how mathematics is used in ways and situations that are genuine and that are relevant to their own experience. This isn't really all that hard.
College students who graduate with engineering degrees have a moral obligation to help the world's poor and under-served with basic needs, like gaining access to clean water, adequate lighting or cooking fuel.
Recently while sitting in my neighborhood Starbucks I looked up from my reading to find myself looking in the face of a ten-year-old. "I know you" he said. "You did those electrical experiments in my classroom." Ah celebrity.