1994. GEMS. In this guide, students observe the "crime scene", then conduct crime lab tests on the evidence at classroom learning stations, analyze the results, and try to solve the mystery. Crime lab tests include thread tests, powder tests, DNA, chromatography, fingerprinting, and many more. Mystery Festival combines fun and excitement with careful experimentation, logical thinking, and real-life connections to forensic science. Understanding of the nature of science is deepened as students experience the ways in which science is like the process of detection. 268 pages, coil bound, b&w illustrations. Grades 2-8.