What is your favorite day? Mine is April 10, 2015. On April 10th, I always eat cake, chocolates, and frosting: it's my birthday! In this video, students are introduced to commas. When we write the date, we have to use a comma. Also, we use commas when we write lists of things, like cake, chocolate, and frosting. What is the date today? Can you write it with a comma?