This is a fun way I found to create some healthy competition between my classes. We are working on Island 10 in Carnegie Mathia. Every time someone finishes a section, they get to add a gumball to their class's machine. The winner will get - GUM! I am also going to color code for sections. Right now they are all red for Section 1. Then they will get a blue one for Section 2. The kids love it so far!