This unit is designed to work with any solar system books or articles that you use in your classroom. I have a list of recommended books on my blog @ http://trifectabookreviews.blogspot.com/.
As the CCSS focus on writing opinions and supporting opinions with evidence, I used that format for planet research and incorporated the key writing points into each flap for many chances at applying these skills.
Flaps are made with 5 pieces of 11 x 17 paper. Cut each piece in half and fold over. (See example.)
5 sheets will make 2 complete flap books for your students.
I have included headers for a fact and opinion anchor chart as well as focus power standards.
Included in this unit:
Fact and Opinion Anchor Chart Headers
Labels for Flap Books
Opinion and Fact Writing Sheet for Flap Books
"I Can" Power Standard Posters