A great tool to get your classes talking about and critiquing art! This will help guide your students past their usual basic responses of "I like it...it's cool/pretty..."
Start by introducing the art work you'd like them to discuss. Allow students to work with a partner or small group first, before broaching the questions with the whole group.
This has helped my students become more confident and comfortable with sharing their opinions. The more we use it, the better the discussion becomes!