About teacher tools: You can kill two birds with one stone when you place a large, easy-to-read monthly or weekly calendar in your classroom. In addition to teaching your class about the days of week and months, having your students take turns filling in dates with reminders teaches them good organization habits as well. Use this calendar to fill in test days, field trips, holidays, and more. Make this teacher tool calendar part of your classroom decorations by making it colorful and fun. Your students will never again be able to tell you they didn't know a test was coming up.