Reflection: Routines and Procedures Properties of Water - Section 2: Student-Conducted Lab

 

There are two special considerations that I am sure to address when teaching this lesson. First, the eye dropper is a new science tool to my students. Many of my students have never seen or used a eye dropper and this can be an obstacle to successfully completing the lab. To address this, I teach a mini-lesson on the materials before releasing the students for their independent lab work time. I show each material to the students and briefly describe how to use the materials. For the eye droppers, I inform students that squeezing the bulb and then immersing the tip in the water will allow them to draw up the most water into the dropper.

The second special consideration with the materials in this lab is contamination. Since one dropper is used for water, one is used for salt water, and one is used for soapy water, I color code each dropper and container of water. This makes it easy for students to see which dropper should be used for each liquid. I also discuss the importance of using the dropper only with the liquid of the matching color. This helps students to see why materials must not be cross-contaminated within the lab.

  Special Materials
  Routines and Procedures: Special Materials
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Properties of Water

Unit 4: Land and Water
Lesson 5 of 18

Objective: SWBAT identify the properties of water and describe surface tension.

Big Idea: Water has unique properties.

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surface tension
 
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