Teachers, here's the perfect template for your math warm-up. I call it Today's Number in my class. There are three different templates in this file that could be used for K-2, depending on your students' math abilities. Start with the first template and increase to the second and third as your students gain essential Common Core Numbers and Operation math skills. Check out the preview to see this fabulous file!
I laminate these and have them for students to grab first thing in the morning. I also hot glue pompoms on the cap of thin dry erase markers (Expo) for students to use as erasers.