Students collect water from a stream and use colorimetric tests to measure dissolved oxygen and pH, then use their readings to determine if the stream is healthy.
Science content (2016 curriculum):
Biology: Features, Adaptations of Living Things (K, 1, 3, 7)
Biology: Food Webs, Ecosystems, Biomes (3, 4)
Chemistry: Atoms, Molecules (3-7)
Science topic (2005 curriculum connection):
Life Science: Needs of Living Things (grade 1)