Author Archives: Martin Horejsi

The iPad Pro: Hands-on Observations






The iPad Pro is, at its core, a larger iPad. Larger screen. Larger speakers (four of them), larger keyboard, larger processor, and larger resolution. But so what? Well, I guess it depends on whether or not you believe in magic! I’ve been with the iPad since the first one back in spring of 2010. The original […]

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The PASCO Bluetooth Spectrometer: Even Isaac Newton would flip over the power of this digital prism!






Simply put, constructivism is a theory of knowledge that argues that humans generate knowledge and meaning from an interaction between their experiences and their ideas. So it follows that nothing is can be more constructivist than exploring the theoretical with real-time tools that measure the invisible. And the PASCO Wireless Spectrometer is just such a tool.     […]

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The Vernier Go Wireless Link: A Bluetooth Broadcaster for your Sensors






Vernier’s new Go Wireless Link is a small but effective solution to expand the scope and reach of over 40 sensors. Using a Bluetooth bridge between sensor and computer or tablet, and a usable range extending up to 30 meters, the Go Wireless Link provided an upgrade to existing sensors and a new frontier in what’s possible in data collection.






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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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