Robert L. McCall 2nd

Robert L. McCall 2nd

319 West Main St. Greenfield, TN 38230

Greenfield High School and Weakley County Schools

High School Science Teacher


Published on Apr 20, 2019

Invitation to TN Junior Academy of Science

Greenfield Research Team (GRT) has been invited to the TN Junior Academy of Science Annual Competition on April 26th at Belmont University. The GRT will present their research at the competition. ...

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Published on Mar 06, 2019

Completion of the Research Paper

The Research Team has completed their research paper that will be sent to the Tennessee Junior Academy of Science this Friday.If the research paper is chosen as one of the top 25 papers in the stat...

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Published on Sep 27, 2018

September 27: Greenfield Public Library Demonstration

Josh Floyd and I (Robert McCall) demonstrated the use of the water quality probes to the Greenfield Public Library Staff. Photos below display the demonstration.Two other students will demonstrate...

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Published on Sep 26, 2018

September 26th: Probe Demonstration and Local Libraries

On September 17th the Research Team demonstrated the process of how to use the water quality probes at the Weakley County Courthouse. There were approximately 25 to 30 people present for the demon...

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Published on Aug 30, 2018

August 30th: Public Access to Probes and Demonstration for County

The research team has called all the residents that water samples were obtained from and informed them of their water quality results.The team has also contacted 5 libraries in Weakley County to de...

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Published on Aug 11, 2018

August 11th: Probe Generated Data and Contacting Residents

The research team is currently contacting residents to inform them of the results of the research.The team is still contacting local libraries and other institutions for the purpose of residents ch...

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Published on Jul 31, 2018

July 31st: Probe Kits, Display, and Fixing Electrodes

We completed two Probe kits today that will be donated to the Regional office in West Tennessee for Water Quality Testing. The other probe will be donated to the Health Department in Weakley Count...

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Published on Jul 27, 2018

July 27th: ASV Testing and Metal Concentrations, 3d Printed Boxes, and Kit Assembly

The Research Team completed all the 3D printed boxes for the Wheestat probes today and labeled each with its appropriate stickers. The picture below represents the finished 3D printed box. The re...

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Published on Jul 25, 2018

July 25th: RAMP Test, 3rd Version 3D Print, and Probe Boxes

The Research team ran a RAMP test program on the probes today to make sure that we are getting current and voltage through a resistor before testing sample solutions. In the picture below this is ...

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I will post a picture of the probe being used with the software interface as well as a link to a spreadsheet where we have recorded values using the probes. The spreadsheet also calculates the concentration for a metal ion based on x and y values inserted into the sheet from the probes user inte...more