Reflection: Routines and Procedures Rain on Land - Section 2: Student Conducted-Lab

 

During this lab, the students interact with a variety of new materials and use their stream table models in new ways. To help students gain familiarity with the new materials, I display the materials in class, provide a brief tutorial on correct usage for each material, and assign each student a specific job to help each group safely and efficiently complete their lab work.

In this lab, students run water through their stream tables for the first time. To prepare their work area, I give each student absorbent pads to place under their stream table and on the floor beneath their work space. This ensure that spills can be addressed quickly and easily. In this lab, I assign one student from each group to hold the stream table in place and one to hold the collection buckets. These jobs encourage the students to take responsibility for conducting their lab without creating a mess in the classroom. I demonstrate how to set up the stream table prior to beginning the lab and address student questions then. In this lab, the students also use a two-liter bottle equipped with a sprinkler head. I demonstrate the correct way to use this tool (invert and gently shake the bottle up and down) and discuss the consequences of not correctly using the tools (if the bottle is squeezed, the water pressure will push the sprinkler head out of the bottle, compromising the results of the lab).

Since these procedures are repeated throughout the unit, the investment of time required to teach materials management is well worth it. 

  Materials and the Stream Table
  Routines and Procedures: Materials and the Stream Table
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Rain on Land

Unit 4: Land and Water
Lesson 6 of 18

Objective: SWBAT model rain on land and identify the way water alters the land.

Big Idea: Water erodes land and changes the physical environment.

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