It seems obvious, but diligent planning—especially planning of the lesson through the student's eyes—is necessary to set the stage for productive class time. Even if things don't always go exactly according to what you have planned, simply having thought through activities, potential trouble spots, and ways to keep your lessons focused on specific objectives ahead of time can make responding in the moment feel more natural and less reactionary when the time comes. You may not have the time to Double Plan every lesson or to post everything just so before the bell rings each day. Still, the more you get in the habit of thoroughly preparing materials and responses ahead of time, the more meaningful you will make the already short time in your class. In Chapter Five, we'll look at ways champion teachers structure their time in class to make the largest, most efficient strides toward common mastery.