Reflection: Routines and Procedures Streams - Section 2: Student-Conducted Lab


As a part of this lesson, students are asked to measure and record the stream width and length and soil deposit width for the stream they created in their stream table. Measuring and recording measurements can be difficult for many students. To help encourage accurate measurements, I begin by reviewing the need for scientists to take and share accurate data. I also discuss why scientists record data using metric measurements. Another obstacle for students is making accurate measurements with a ruler when they cannot easily lay their ruler beside the stream and when the curved stream is difficult to measure. I discuss with students the need to use non-standard tools to make accurate measurements.

In this stream measuring photo a student is struggling to measure stream length with a ruler. I guided the class in a brainstorming session about ways that the students could accurately measure stream length. This student later chose to use a string to mark the length of the winding stream and then to measure the stream length with her ruler. This procedure enabled the student to make and record accurate measurements.

  Routines and Procedures: Making Accurate Measurements in the Stream Table
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Unit 4: Land and Water
Lesson 7 of 18

Objective: SWBAT create a model stream and identify erosion in their stream table.

Big Idea: Water forms streams which change the land.

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stream of water
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