Pixar's "Day and Night" short film. I used this today for a first grade science lesson on day sky vs. night sky and it was a PERFECT set. It highlights some of the good things about each to get the wheels turning in their head, and the kids really enjoyed it! I followed it up by a Venn diagram of day and night that we completed as a class.
Day & Night (2010 film) - Wikipedia, the free encyclopedia