Explore a playful, project-based STEM lesson where students use Play-Doh and plastic cutting boards to model root systems with maximum surface area. Surface area is a fundamental concept across the sciences—from plant biology and nutrient absorption to chemical reactions, human physiology, and materials engineering. This activity introduces the idea through a hands-on design challenge embedded within a 7-week garden-based curriculum for grades 3–6. Throughout the unit, students plan, plant, care for, and measure crops, applying scientific and mathematical reasoning to real-world problems. The experience culminates in a community tostada party, where students harvest their garden produce and reflect on their learning. Developed from an NSF-funded study, the curriculum promotes inquiry, collaboration, and discourse—especially for multilingual learners—while fostering deep connections between science, culture, and place-based education.
TAKEAWAYS:
Attendees will learn how to implement a hands-on activity where students model root systems with Play-Doh to explore how plants maximize surface area for nutrient absorption, connecting a key scientific concept to real-world garden-based learning.
SPEAKERS:
Kim Rillero, Peter Rillero