Sunflower is organized by thematic unit: Air, Human Body, Plants, Trash, and Water for grades 2-4 for afterschool programs. Complete sets consist of 12 copies of activity books in Spanish or English and a complete Leader's (or Teacher's) Guide (available in Spanish or English) and a materials kit. Individual copies of the activity books and guides (for afterschool programs) and materials kits are also available.
Each unit of Sunflower is presented in a full-color magazine format activity book for children, in either English or Spanish, with an accompanying afterschool leader's guide with complete lesson plans, extension activities and evaluation materials.The materials needed for experiments are always low-cost and easily obtainable in school or at home.
Sunflower is endorsed by the U.S. Department of Education Expert Panel on Mathematics and Science Education.