The samples were collected from 4 different sites around our local area
Students used water purity testing strips to test the water quality.
Our testing showed some variation in general hard water levels - particularly in the Waikato River site. Hard water testing shows the presence of minerals such as magnesium and calcium in the water. Typically, these minerals are present when water travels through rocks, sand and soil. So having a higher hard water result at the Waikato River site isn’t unexpected. This sample also took a few days to settle and clear.
We wrote a question to investigate - Is there animal life in our local waterways?
And we wrote a hypothesis that we would test using the samples.
Arley asked her what he could do as a child to help his local waterway clean. She had some great ideas that Arley could do including:
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Pickling up rubbish,
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Taking regular photos to monitor
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Using test strips to monitor the water quality.
You can see more about her work.
This water sample scientific investigation prompted more questions from the students about rivers and how they are formed. This led itself to another science investigation. We crumpled paper up and ‘created’ our very own mountain ranges and coloured where we thought the water would run down.
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