They had to investigate the population of water invertebrates at 4 locations, a canal, a brook man made ponds and a hoverfly lagoon.
They then took measurements of 5 different aspects of the water chemistry; turbidity, ammonia, nitrates, phosphorus and oxygen.
Students write up a full report in which they carry out statistical analysis (chi squared and Simpson's diversity index)
Resource includes ppt on eutrophication, a plan of action for the field trip, data recording sheet, methods for the water chemistry tests, invertebrate identification charts and a help sheet showing what the students needed to include in their report.
Students were asked to give a presentation to report their findings to the rest of the class.
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