For those looking to do Citizen Science, Cornell Lab of Ornithology has a bunch of projects for students from kindergarten to adults can get in on and help out the science community.
For teachers looking for real-world application of math and science, look no further than citizen science projects.
This SciAm “profile” (if you will) is for eBird: a presence/absence site for birders to record sightings of birds. And ANYONE can do it…. including kids. And there is date for teachers & students to pull of from around the US to use in those pesky real-world problems.