This brochure activity can serve as a great mini-research activity for kids to do as part of a unit on astronomy, or as an enrichment activity. Students are asked to research a planet in our solar system, and illustrate and fill in various pieces of information on the brochure. This project can easily be adapted for kids in grades 2-5 by adjusting your expectations for the amount of writing and specific levels of detail given by the students.
Activities about The Solar System - Zoom Astronomy This gives you a workbook with tabs over the 8 planets, you could take pluto out. I really like how it is just a whole book over the solar system. It gives some good information on each planet which is good.