If you have a daily preschool routine at home. This "today is" calendar activity is a great addition to your schedule. LO is not quite two yet, so he doesn't quite get the concept of the days of the week. But I'm hoping that being repetitive but doing this every day we'll slowly start understanding that every day is a different day. He is already familiar with the weather and knows which ones to stick on for sunny, raining, cloudy, and so forth.