This notebook is an example of how LiveMath can be used in the classroom. The logarithm problem is given, but until the icon is double clicked, the solution remains hidden. This notebook could have been a quiz with the collapser locked and then unlocked after the quiz.  Another option might be to reveal the first two or three steps and have the students do the rest,explaining the procedures. When the collapser is opened, the problem could be printed or posted. Of course, the problem can be changed and LiveMath will update the steps.