Complete 22 pages of science-sleuthing activities including finding and observing rocks, insects, and flowers that glow under black light, making gelatin that glows, counterfeit money detection, encrypting codes and ciphers, and more. Includes black light illuminator invisible ink pen to write secret messages, too! Recommended for ages 8 years and older. Hand-held/stand-up black light with 3 LED black lights and textured grippers. Also includes black light illuminator invisible ink pen. 22-Page activity journal full of black light experiments. Requires 2 AA batteries (not included).