for using their noodle–their brain! when the jar is full, we have a noodle party. it gives a fun theme to the experience.
my class starts the beginning of each subject with 5 marbles drawn on the board. if their behavior is not ideal then they lose a marble. any marbles that are on the board at the end gets out into the jar. this has been very beneficial in my class and helps them stay focused. they can definitely earn back any marbles they lose. trying to make it more positive than negative, since they lose the marbles!
i have never used a marble jar but i absolutely love the tip 