Includes a version for use when the class is split into two groups as well as a whole-class version. A great tool to use in your class for PBIS (Positive Behavioral Interventions and Support). Set a class goal (or goals) and determine a reward together. Drag the marbles into the jar one at a time as earned (Examples: great participation in a class discussion, 100% assignment completion, etc.). When the jar is full of marbles, the group has met the goal and earned their reward. (Background crea