Teachers don’t need expensive equipment or elaborate planning to engage their students in a meaningful exploration.

A famous surgeon used to tell his students that a doctor needed two abilities: freedom from nausea and the power of observation. Then he would dip his finger into a bitterly foul liquid, lick it off ...

Many of science’s most important breakthroughs, from the discovery of microorganisms to the theory of evolution, have come about through observation. The scientist’s gaze is clearly a powerful tool ...