Activity Detail
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Water Quality
 


Activity Overview

In this activity, students' will use a pH sensor to check and compare the pH values of various water samples. They will understand the meaning and effect of pH and factors that affect pH.

Before the Activity

  • Connect the pH sensor to Channel 1 the CBL 2; unit
  • Download DataMate™ program using the TI-GRAPH LINK™ or the TI Connect™ software
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 133 -140 from the attached PDF file for your class

    		•

    		During the Activity

    		Distribute the pages to your class.

    Follow the Activity procedures:
  • Collect water samples from community sources
  • Measure the pH of distilled water
  • Measure the pH of samples one at a time rinsing the pH sensor with distilled water between measurements
  • Create a bar graph to display the data
  • Calculate the average pH of water in the community
  • Understand how pH of water affects aquatic populations
  • Explore factors that affect the pH of water bodies

    		After the Activity

    		Students will complete Student Data Collection and Analysis Sheet.

    Review student results
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary

    		Other Downloads




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    view textbook alignment

    Subject Area:
    Science : Physical Science : Acids and Bases
    Science : Life Science : Ecology
    Science : Earth Science : Fresh Water
    Science : Environmental Science : Water
    Science : Biology : Ecosystems

    Author:
    Texas Instruments

    Level:
    5-8

    Activity Time:
    60 Minutes

    Device:
    TI-73 Explorer™

    Apps:
    DataMate

    Software:
    TI Connect™, TI-GRAPH LINK™

    Accessories:
    CBL™/CBL 2™, TI Connectivity Cable, TI-GRAPH LINK™ Cable, Unit-to-Unit link cables, Sensor - pH

    Other:
    This is activity 15 from EXPLORATIONS Book: Activities for Middle Grades Science with the CBL 2™ and the TI-73

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