[b]Checkbox[/b] is very useful for controlling what information you want to show in a GeoGebra applet. It is basically connected to a specific Boolean variable so that you can change its value to true / false by checking / unchecking the box.[br][br]The GeoGebra applet below is a simple example of the use of checkbox.[br][br][b][u]Classwork[/u][/b]: Add a new checkbox "More hint" in the GeoGebra applet below so that the text "Midpoint theorem" will show when it is checked. Also this checkbox should be hidden when the "Answer" is unchecked.[br] [br]