The "Classroom Hydroponic Plant Factory" instructional guide, published by Foothill-Hydroponics in 2004, is a valuable educational resource for teachers and educators for middle and high school students interested in agriculture, hydroponics, and crop science. Authored by Patricia A. Brown and Ginger R. Krelle, this revised edition book features illustrations and covers topics related to science and nature experiments and projects. With a beginner and intermediate level focus, this trade paperback book provides 115 pages of valuable information for educators looking to incorporate hands-on hydroponic activities into their classrooms.