Have you ever wondered what a root vegetable, such as a carrot or radish, looks like while it's growing underground? Well, with this handy Root Viewer you can watch your carrot seed sprout and grow into a delicious carrot ready for harvest. The easy-to-follow instructions make the Root Viewer a fun and educational experience. The included growing journal allows your child to take notes about changes that occur during growing time. This kit also includes 3-5 ½" clear viewers, a wooden tube holder (which holds all 3 tubes), growing medium, and carrot, onion, and radish seeds. The wooden holder measures 6 ¾" x 2" x 5 ¾".