Mr. stone's students have been completely engrossed in a physics experiment. at the end of the experiment, all of his students scored 100% on the follow-up quiz. this is one of mr. stone's most effective class sessions. this illustrates:

This shows how academic learning time can be maximized to the benefit of all the students. This is the concept of how much time students actually spend learning and putting material into use. Having highly-productive ALT can lead to students performing better on quizzes and tests.