The­re are times when you’­re class is going wrong or a col­le­ague is ill and you’­ve been asked to cover, you have no plan, no mate­ri­als and a text­book that is bor­ing your stu­dents to tears… The­se fil­lers requi­re no pre­pa­ra­ti­on and no equip­ment bey­ond a white­board, mar­kers and some paper.

Top 20 Fil­lers and Warmers