Got sticky notes?

This week, I watched a science teacher use sticky notes in a very creative way. To check for understanding, the teacher gave each student a sticky note and asked each of her science students to give concrete examples of the vocabulary that they had learned in class. As the students exited the classroom, they placed the sticky note on the door. After the students all left the classroom, the teacher collected the sticky notes and was able to tell right away which students understood the concepts and which ones needed some targeted assistance. (Ben Johnson at Edutopia)