For the last week we have been in groups making a model of a wetlands. The model wetlands are meant to show how wetlands work. We mixed dirt, sand and water as our sediments and pollutants. We used sponges as our filters which are rocks, reeds, branches and other natural blockades. We used a hot glue gun to stick the sponges down on to the models wetland. Then some groups put sand around the model wetland. Next we made the dirty water and poured it in our model wetlands and watched the sponges filter the water. At the end we got some water from the wetland expriment and compared to the water we started off with. We were amazed how much the sponges worked. Here some photos:

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