Designed for grades 4-7, this carbon cycle model lab sheet walks your student through building a physical diorama that maps carbon movement across Earth’s major systems. The seven-step procedure directs them to line a shoebox with brown and blue paper for soil and water, add rocks and a small plant, place cotton balls along the top to represent the atmosphere, and then connect each labeled component with directional arrows showing how carbon transfers during photosynthesis, animal consumption, decomposition, and ocean-atmosphere exchange. Three observation questions at the bottom ask students to describe how carbon moves in their model, explain why the cycle matters for life on Earth, and identify which part of the cycle surprised them most.

This carbon cycle model lab sheet fits naturally into an earth science or life science unit study and works as a standalone project or as a capstone activity after reading-based lessons on biogeochemical cycles. Because the model is three-dimensional and student-assembled, it moves beyond worksheet recall and asks your homeschooler to make spatial decisions about how each component connects to the others. Completing it demonstrates understanding of carbon as a shared element across living organisms, the atmosphere, oceans, soil, and geologic formations.