This guide is a work in progress; to be continually updated with further information (more stimulating experiments and unusual facts), consequently not every page will have a corresponding page in the activity book. It was created to provide teachers with a useful, informative resource regardless of their educational emphasis. It aims at helping children (kindergarten through grade 3) understand the importance of plant nutrients and modern technology in producing food and fiber. The guide pages have four sections: information for teacher's; activity/curriculum; materials needed; and definitions, information, reasons, tidbits, and suggestions. (JRH)