Make a fish out of onion skins, craft a beheaded alien cake, or create your own erupting volcano. Every project in The Grossology Handbook is tried and tested. The recipes and projects use simple, everyday materials and have clear step-by-step instructions to help you get the most of your gross-out experience. Smart "Fact Files" and "Think About It" boxes introduce fun facts and explain the educational value behind each experiment and activity. Freaky, fascinating, and fun!