Learning Resources Hydroponics Lab.This lab set is perfect for watching plants grow both up and down! Unique 360° clear viewing area makes this set ideal for whole class projects and small group use.When filled with water, the plastic tubes create a magnified view of the roots for close up inspection.Includes 3 each of test tubes, seed baskets and stands, featuring a wipe clean surface for labelling.Made from durable, shatterproof plastic.Tubes measure 4cm W x 18cm H. Includes activity guide.Suitable for ages 5+.