A move to a different town or school gives us new places to explore, new people to meet; a lost pet means we have to organize a careful search; baby-sitting requires looking out for dangers a young child can't foresee; a car crash or fire demands that we get help immediately.

A move to a different town or school gives us new places to explore, new people to meet; a lost pet means we have to organize a careful search; baby-sitting requires looking out for dangers a young child can't foresee; a car crash or fire demands that we get help immediately.