No-prep, differentiated NGSS simulation where students manage clean water resources through computational modeling and strategic decision-making.NGSS HS-ESS3-3 simulation for high school Earth & Environmental Science - Students use a spreadsheet model to explore sustainability tradeoffs in clean water access. Differentiated, no-prep PDF with SPED/ELL supports. Bring sustainability, strategy, and systems thinking to your classroom with this NGSS- and NYSSLS-aligned computational simulation. Stude