Print the stars on card stock and laminate. You can tape them to the student's desk. This is a great way for the students to self-assess. At the end of a lesson, you can ask the students to "reach for the star." They will point to the star that best describes their understanding of the lesson. Green=I understand so well I could teach someone else. Yellow=I understand some of it, but still need help. Red= I need the lesson to be retaught.