https://padlet.com/edioubate/iba2ronhx1sp85uw en-us 2022-12-06 21:47:25 UTC 2023-02-02 20:03:20 UTC hello@padlet.com wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2413013979 1. Historians believe people began using some form of water filter over 4000 years ago!

2. The earliest recorded attempts to find or generate pure water date back to 2000 B.C.]]> 2022-12-07 17:41:59 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2413013979 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2447210511 2023-01-17 17:24:16 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2447210511 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2448690450 2023-01-18 17:21:10 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2448690450 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2448695338 2023-01-18 17:24:28 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2448695338 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450126640 2023-01-19 17:25:01 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450126640 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450127032 2023-01-19 17:25:20 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450127032 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450129098 Place cotton balls, cloth, or a coffee filter inside the bottle as the first layer. The first layer should be about one to two inches thick. Add an inch of activated charcoal as the second layer on top of the cotton layer. Over the charcoal, add about two inches of gravel or small stones as the third layer.]]> 2023-01-19 17:27:01 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450129098 wunderwood1 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450134334 2023-01-19 17:30:54 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2450134334 https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2466703823 we are trying to figure out if a nature filter or a manufactured filter would work better.]]> 2023-02-02 19:58:06 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2466703823 edioubate https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2466709112 we made activated charcoal in my fireplace with wood chips. The school provided us with fine sand and pebbles. The coarse sand took the longest to get though, because we either kept forgetting to buy it, or got distracted.]]> 2023-02-02 20:03:20 UTC https://padlet.com/edioubate/iba2ronhx1sp85uw/wish/2466709112