My Fourth Graders and I always have a ton of fun with this unit. They already come in knowing a great deal about our Solar System. But it's always so much fun teaching some of the more interesting facts. They love the Hubble Telescope.
So I came up with these task cards to help my students interact with the material. There are 20 task cards in this set covering information about stars, planets, rotation, revolution, orbits, and axis.
I've included an Answer Key as well.