Water-Filter Engineer
Water-Filter Engineer https://www.sciencebuddies.org/science-fair-projects/project-ideas/EnvEng_p030/environmental-engineering/how-filtering-can-clean-water Days: 2 Mode: Pairs Take-home: Filter column model
Teaching & key ideas
Key concepts: Filtration vs purification, particle size, layered media, fair comparison.
Hook: Pour identical dirty water through gravel alone and a layered filter.
Test / evidence: Compare clarity, flow time, and volume recovered; never call filtered water safe to drink.
Variables to change: Layer order; depth; particle size; flow rate.
Lesson flow
Lesson plan:
Day 1: design/build
Day 2: test + improve
Video:
Make a Water Filter
https://www.youtube.com/watch?v=bqcll80EwWk
Safety / cleanup:
Filtered water is NOT for drinking; goggles; wash hands; control activated carbon dust.