Places to find Citizen Science projects (they aren't all astronomy related):

Citizen Science Central (Cornell Lab of Ornithology) http://www.birds.cornell.edu/citscitoolkit/projects  read more »

NASA and Microsoft collaborated to create a Web site where Internet users can have fun while advancing their knowledge of Mars.  read more »

The Impact Cratering Lab exercises introduce a geologic process that has had major consequences for the geology of all solid bodies in the solar system and for the biology of Earth.  read more »

Help scientist do real science by helping to identify surface features on the Moon - craters and boulders. A fun way to get involved in real science using real data.

Resource Guide to the Moon for Educators
Available from the Astronomical Society of the Pacific  read more »

Make a comet representing the ingredients in a real comet. It is an exciting and relatively simple demonstration to do that leaves quite an impression on students. (MESSENGER and NOAO)  read more »

Teaching with Story and Song

Grades K-7
Teach about comets blending myth, story, song and hands-on activities

Make a Comet and Eat It

Grades 2-10  read more »

Cover & Title Page
Acknowledgements & Table of Contents
Overview
- About Exploring Meteorite Mysteries
- About the Meteorite Disk
- About the Slide Set
- Science Process Skills  read more »

About This Book
About the Lunar Sample Disk
About the Slide Set
View the Exploring the Moon Slide Set
Activity Matrices  read more »

Teacher's Guide — The Moon: Gateway to the Solar System

This is a good list of resources for teachers.