These numbers are perfect to add to the outside of your classroom clock. They're helpful or the students when they're learning about time. I think it is important to get them acclimated with the minutes before introducing the concept for the first time. I have a digital clock, as well as an analog clock. I placed my analog clock directly under the digital clock, and they can see how the minutes correlate with one another. I can make these in any color, just ask!