For the past two weeks, the fifth and sixth grade students have been performing controlled experiments to determine how well different water filter materials will filter different types of contaminated water. Groups were given water contaminated with soil, tea, or cornstarch. The different filter materials they tested are screen, paper filters, sand and gravel, cotton balls, and cheese cloth. As the students tested the materials, they were recording their observations, and using three different criteria to determine the effectiveness of the materials. The criteria is clarity, amount of particles or sediment, and the time it takes to filter one quarter cup of water.
4 Comments
12/10/2015 11:25:52 am
The criteria is clarity, amount of particles or sediment, and the time it takes to filter one quarter cup of water.f
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6/10/2016 06:29:20 am
A water filter removes impurities from water by means of a fine physical barrier, a chemical process or a biological process.
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7/11/2016 03:32:13 am
For the past two weeks, the fifth and sixth grade students have been performing controlled experiments to determine how well different water filter materials will filter different types of contaminated water
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8/13/2017 04:08:16 am
pleasant bLog! its fascinating. much obliged to you for sharing.
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AuthorMrs. Houseman-STEM Specialist Archives
May 2015
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