Students will investigate how water impacts daily life and how geometry can help conserve it by conducting firsthand user research, documenting empathy findings, and connecting observations to area and volume concepts of rectangular prisms and cubes.

Students will synthesize their water user research into clear, evidence-based problem statements that connect geometric reasoning (area, surface area, and volume of prisms) to real community water needs. They will analyze patterns across interviews, ground their "How Might We" questions in user evidence, and articulate how geometry can support water stewardship and increased access for disadvantaged communities.

Students will generate a wide range of prism-based water conservation solutions grounded in real user needs, apply geometric reasoning (area, perimeter, surface area, and volume) to compare ideas, and converge on the strongest concepts to prototype. They will move from divergent brainstorming to evidence-based selection using user criteria and mathematical analysis.

Students will build, test, and refine water-efficient rectangular and triangular prism prototypes that respond to real user needs. They will apply calculations of area, perimeter, surface area, and volume (including fractional edge lengths) to construct accurate low- and medium-fidelity models, gather structured feedback, and iterate using documented geometric reasoning tied to water conservation and access.

Students will conduct a final round of authentic user testing on their prism-based water conservation systems, analyze feedback to refine geometric calculations and design choices, and present a stakeholder-ready narrative that traces user research, mathematical reasoning (area, perimeter, surface area, volume), and iteration. The phase culminates in a public exhibition where students demonstrate how geometry supports water stewardship and increased access for disadvantaged communities.