The six challenges below are designed to scaffold the learners' experience with a variety of uses of GEE-WIS and methods to itegrate it into an existing curriculum.

Challenge 1: Design a means to get water from your local pond from the surface, mid-depth, and bottom, without mixing the waters from various levels. (This is how BORIS samples the water from the ponds.)

Challenge 2: Compare the water samples from the 3 levels (from Challenge 1). If they are different along any dimensions measured (temp, pH, DO, etc.) hypothesize why. (Probes or traditional chemical kits may be used to sample the water.)

Challenge 3: One of the oxygen inputs to the pond is the algae. Design a means to determine how much algae there is in the pond and how much oxygen one would expect to be input into the pond from that much algae. (Maybe grow some in the lab and see how much oxygen it produces.)

Challenge 4: Take the calculations from Challenge 3 and see if that amount of oxygen is present in the pond. If it is now, hypothesize why.

Challenge 5: Brainstorm the various uses to which water is put (drinking water for humans, habitat for wildlife, swimming pools, recreational boating, etc.) then construct the definition of "clean and healthy" for each of these instances. Note that they may be different (no bacteria in pool water and lots in pond water) and discuss how "good water quality" may be a relative issue.

Challenge 6: Consider undertaking the Anchor Problem on this site.