Author Archives: Martin Horejsi

Get Lost in the Magic of Learning with the Celestron Flipview Digital Microscope






One of the wonderful things about the amazing science education technology available to teachers today is that the tech can disappear—in a good way. The Celestron Flipview digital microscope is one of them. Celestron, as a company can trace its roots back to 1955, but the magic of of optics goes back to the 15th century. […]

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Go Big with Vernier’s Go Wireless pH Sensor

Go Big with Vernier’s Go Wireless pH Sensor  pH, like time and temperature, is a physical characteristic that is tossed around daily in science class but rarely understood on a deeper level. In short, time is a measurement of change; temperature is a measurement of relative motion; and pH is the negative log of the […]

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Fun and Science with the Weatherhawk myMET digital Windmeter






The Weatherhawk myMET Windmeter  Measuring wind speed is just one of the many facets of exploring climate science. Wind, or the natural noticeable movement of air is created and changed by many well-known factors including temperature, barometric pressure, landscape, and time of day among others. The use of a digital anemometer allows students to put […]

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The Pasco Wireless Dissolved Oxygen Probe VS. Winter Water






The power of a Bluetooth-connected Dissolved Oxygen probe is not only from the DO data, but the places the data can be collected, and the ways the data is presented. Over the holidays I took the Pasco wireless DO probe up in the mountains to generate some data and answer some questions. Since my winter/spring lesson plans […]

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The Vernier Motion Encoder System: Motion Encoding Made Personal

cart-n-sensor





The Vernier Motion Encoder System marks a significant shift in the science teacher’s ability to transition between the conceptual, formula-based physics of motion to the “real world” application of those concepts and formulas—and here’s the big news—without the need for disclaimers explaining away anomalous data, inconsistent graphs, and the general background noise of low resolution […]

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Going Wild with the Go Wireless Temp Sensor






The new Go Wireless Temp sensor is a welcome addition to the suite of Bluetooth tools produced by Vernier that are available for the iPad. While not much larger than the business end of the traditional, wired temperature sensor, the Go Wireless Temp has onboard power and a radio transmitter all nestled in a thumb-sized, […]

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Dissolving the Barriers to Measuring Dissolved Oxygen






The amount of dissolved oxygen (DO) in water is a critical component in the aquatic ecosystem. While measuring the level of DO is a common practice in water quality studies, the sensors often used to capture the data were far from the instantaneous measurements we have grown to love about many other probes. Popular sensors […]

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Google Glass: A Lab on the End of your Nose






Over the summer I had the privilege of watching a 5th grader take Google Glass for a spin. The student was far faster at mastering the interface than I was, and also much more creative in his application of Google Glass. Google Glass is, well, I better let Wikipedia explain it: Google Glass (styled “GLΛSS”) is […]

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Flatten the Classroom with the iGo Microscope






Although many handheld technologies of Star Trek seem antiquated, or perhaps even steam punkish in todays world, there are still a few pieces of Treknata that we dream of. But that list just got one item shorter with the iGo wireless microscope. While not quite a Medical Tricorder, the iGo does capture the essence of […]

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Upping the Ante: A Classroom Gas Chromatograph!






The gas chromatograph, until recently, has been a founding member in the exclusive club of scientific instrumentation that lived only in the rarified air of serious scientific laboratories. Other members of the club include the electron microscope, the mass spectrometer, nuclear magnetic resonance spectroscopy, and of course the cyclotron. Below is a picture of a […]

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