Let’s explore conductivity! First HST has a homemade conductivity meter to test metals. The Exploratorium has detailed instructions to make a conductivity meter with Christmas tree lights, a 9V battery, and a popsicle stick.
Not that I would go over the top. I do have a bunch of devices. Why? I always fear my home-school students will miss out on exposure to tools used in private or public schools. I bought a bunch of different devices I used when I taught professionally. I have several digital meters. Since we have the toys we might as well play with them.
Additionally, I have PASCO Spark devices.
Additionally,I have adapters for Vernier conductivity probes to use with TI 84 calculators.
The MicroChem kit and the RadMaste kits I bought also have conductivity meters.
Kiddos love toys. The Chem class can try all of the devices. I have several solutions: salt water, rubbing alcohol, sugar, vinegar, and copper sulfate. The teens may test the solutions with every device. I do the same thing with microscopes. I have cell phone, USB, and traditional microscopes; the class learns how to use all of them. The PASCO Spark devices and TI 84 graphing calculators both interface with sensors. The Vernier Easylink is an adaptor which connects with other Vernier probes.
Most of the time we use the TI84 calculators with a sensor, such as the temperature sensor. But, I have a bunch of the PASCO Spark devices, conductivity sensors, and temperature probes. Who doesn’t like to play with a new toy?
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