Pam Walker and Elaine Wood each have more than 20 years of science teaching experience, and Pam Walker was named the 2007 Georgia Teacher of the Year.  Elaine Wood teaches at Chapel Hill High School in Douglasville, Georgia.  Both Pam and Elaine are master teachers and hold specialist degrees in science and science education. They are the authors of dozens of books for middle and high school science teachers and students, including Crime Scene Investigations and Hands-On General Science Activities with Real-Life Applications, both from Jossey-Bass.