- (First of all, this probably belongs in a later phase but here it is - a work in progress lesson plan)
situation: Access to clean drinking water is a universal problem that is growing across the globe - Especially if you live in places like Dhaka, Bangladesh or Flint, Michigan- but even in places like Hawaii (I'm serious).
complication: we don't really know what's in our water, even bottled water has various levels of purity
Question: so how might we start to understand what's in our drinking water, whether it comes from a bottle, a tap, or a catchment system?
Answer: TDS (total dissolved solids) sensors are readily available and probably sold with water filters in a store near you (assuming you live in the US) and will give you a reading (PPM) instantly.
Check out the Tap Water Challenge: Http://www.generativity.us/the-tap-water-challenge