When Greg Dodd began teaching high school chemistry 34 years ago, his classes’ experiments in Boyle’s Law weren’t exactly elegant. Typically, students at West Virginia’s George Washington High School attempted to gauge the pressure and volume...
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When Stacey Howell returned to teaching high school chemistry after raising her family, she found a very different world: email, computer labs, and other technologies had become a normal part of the curriculum. Fortunately, Utah’s Davis High School...
An Improvement to the Inverse Square Law Light ExperimentRichard Borne (Northern Illinois University) has suggested an improvement to the Inverse Square Law Light Experiment using our Optics Expansion Kit (order code OEK). He noticed that the intensi...
More than Meets the Eye – Infrared Cameras in Open-Ended University Thermodynamics Labs
Emil Melander, Jesper Haglund, Matthias Weiszflog, and Staffan Andersson; Uppsala University, Sweden, The Physics Teacher, Vol. 54, No. 9, December 2016....
Jim Blattman doesn’t exactly think fondly of “the good old days.” Before he had the advantage of Vernier data-collection tools, he says teaching science at Lowry High School in Winnemucca, Nevada was frequently a challenge. “I tell my kids, ...
Thermocouples are one of the most common types of temperature sensors. They are inexpensive, rugged, and quite versatile, as they can measure a wide range of temperatures from very low (-250°C) to very high (1700°C) values. Since they can be made ...
Photosynthesis and respiration of plants are fundamental concepts in biology and agricultural science. Our CO2 and O2 Gas Sensors make it easy for your students to study these concepts, producing beautiful data as shown here. However, you can’t jus...
While performing an experiment from the Physics with Vernier lab book, "Energy of a Tossed Ball," Kathy Morello and her students from St. Joseph's Academy in Baton Rouge, LA found some perplexing results. In the experiment, a Motion Detector is used...
Richard Born, Associate Professor Emeritus
Northern Illinois University
Operations Management and Information Systems
Introduction
Nature has its way with air. Warm air rises (less dense), and cold air sinks (denser). This natural thermal stratif...
Calcium, Ca2+
Calcium, in the form of the Ca2+ ion, is one of the major inorganic cations, or positive ions, in saltwater and freshwater. It can originate from the dissociation of salts, such as calcium chloride or calcium sulfate, in water.
Mo...