This learning resource focuses on the dynamics of ecosystems, specifically emphasizing energy flow and the factors that affect carrying capacity. It guides students through various activities such as creating an Energy Flow Map, engaging in a See-Think-Wonder exercise to analyze an ecosystem, and building vocabulary around key terms such as biotic and abiotic factors. Students categorizes local environmental factors as living (biotic) or non-living (abiotic), reflect on population data of elk to determine carrying capacity, and synthesize their understanding of how changes in abiotic factors can influence biotic populations. Additionally, the resource includes a metacognitive calibration section for self-assessment of confidence in understanding ecosystem concepts, culminating in a challenge task that explores the impact of removing primary producers from the ecosystem.