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Shop · Project-based learning unit

Clean Water Engineers

  • Grades 5 to 7

Teams build a gravity water filter in a cut plastic bottle, test it on muddy water, redesign one layer, and report the clarity, flow rate, and cost per liter to a village water board.

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What's inside

  • Day 1: The water board letter
  • Day 2: Measuring clarity
  • Day 3: Layers and a plan
  • Day 4: Build and test 1
  • Day 5: Rates and costs
  • Day 6: Redesign one layer
  • Day 7: Test 2
  • Day 8: Graphs and the report
  • Day 9: Water board meeting

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