Engineering is building things that help our human life, and making it better.
We used cotton buds, steel wool, cloth, plastic bottles, and rubber bands.
The challenge for our group was that our hole was too big, and that caused our water to not filter as much, because the unfiltered water went too fast.
The steel wool blocked the sand and rocks, and the layers of cloth took care of the smaller particles. And the cotton buds should have sucked away some of the unfiltered water.