This lesson is a collaboration between the Lego Group and the Massachusetts Institute of Technology Edgerton Center. The LEGO bricks provide kinesthetic experiences for students to model the process of photosynthesis. The phenomenon of this lesson is to figure out how plants gain mass. The lesson first elicits students prior knowledge then helps students understand that the primary source of plant mass comes from the air instead of soil. Students build a glucose molecule by rearranging the atoms of carbon dioxide and water. Through this process, students see that matter is conserved in a chemical reaction. Students also model how plant cells build structures, such as cellulose and starch, from glucose molecules.
The website includes student pages, answer keys, and supporting documents such as posters and instructions for making glucose molecules. An interactive video "Roots, Shoots, and Wood" and "LEGO Education Photosynthesis Teacher's Guide" provides helpful strategies to teach this lesson. The "Photosynthesis Student Key" can also serve as the Teacher's Guide and instructional key. It contains helpful instructional notes that teachers can use for guidance.