I found this the other day when looking for a quick science lesson to do with my tutee at the Boys and Girls Club. What a fun way to teach the different moon phases! Although this is geared toward second grade, I think that it can easily be tweaked to use in all elementary grade levels. 9977
put magnetic letters on a piece of construction paper and leave it out in the sun. When the exposed paper fades, you have an easy letter matching game! This would be fun to do with students creating their own papers to match the letters, as the year goes on you can see the changes and if their free formed placing of the letters turn into placing letters to make words.
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.