Seth Rojello

This hands-on lab engages students in exploring the process of osmosis and water potential (Ψ) using de-shelled chicken eggs as model cells. By comparing changes in egg mass and volume in distilled water and corn syrup, students gain a clear understanding of tonicity, solute potential (Ψs), and cellular homeostasis. The activity reinforces key concepts in cell transport and helps students connect microscopic processes to real-world examples such as IV fluids, dehydration, and plant water balance

Overview: Explore how natural disasters reshape ecosystems with this in-depth, NGSS-aligned resource on disturbance ecology. Designed to develop systems thinking, this multi-part lesson guides students through case studies, ecological modeling, and evidence-based argument writing. Students will analyze the cascading effects of wildfires, floods, hurricanes, droughts, and volcanic eruptions on biodiversity, nutrient cycling, succession, and evolutionary adaptation—perfect for high school and adva