They're hallmarks of childhood. The endless "why" questions. The desire to touch and taste everything. The curiosity and the observations.It can't be denied-children have an inherent desire to know. Teachers and parents can either encourage this natural inquisitiveness or squelch it. There is joy in the classroom when children learn-not to take a test, not to get a grade, not to compete with each other, and not to please their parents or their teachers-but because they want to know...