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This project has two soil investigations within it. 1-What makes up a unit of soil and 2. At what rate will water penatrade different kinds of soil.
It also has two worksheets to record data. What I like about this Model is the worksheet on what makes up a unit of soil requires it be developed by members of the student group. First they need to propose a series of questions. Then they need to provide the information they collected that will help answer those questions. Then it asks the question: Are you a good science data investigator.
The kicker is the group then hands their worksheet to another group as asks them to answer their questions. If the other group can answer the question the initial group did a good job in investigating and recording data. If the second group cannot answer the question then the initial group is required to review their material and find out why the second group could not answer the questions. This could lead to a lively discussion ...
The second investigation's worksheet is ready to go as is but allows students to add an additional bit of data.
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