Traditionally visual techniques are used to measure the concentration of ions in solution. Concentration is determined by comparing colors of solutions with charts and tables. Vernier ion-selective electrodes (ISEs), offer a much easier and more rel...

Fluorescence spectroscopy is a very sensitive and delicate technique. It often requires a few attempts before getting great data. In our chemistry department, we have come across a few common problems and would like to share some solutions that fix ...

NSTA Recommends recently featured the Go Direct® O2 Gas Sensor. In his review, Martin Horejsi used the wireless sensor to collect data during various investigations, including an out-of-the-classroom experiment on an airplane. He highlighted the ...

Our Go Direct family of sensors, along with Graphical Analysis™ 4, recently won a 2018 Tech Edvocate Award. The family of wireless sensors and its accompanying software were recognized in the Best STEM/STEAM Education App or Tool category. After a...

The new Go Direct® Centripetal Force Apparatus makes it easier than ever to investigate rotational dynamics. Students can investigate the relationships among force, mass, and radius wirelessly—all you need is the Go Direct Centripetal Force Appar...

We have had a lot of fun with the Robotic Hand project, which we discovered in the Hacking STEM Library from Microsoft®. Using our Low-g Accelerometer, an Arduino™, and our Vernier Arduino® Interface Shield, we modified the project to create an e...

Many teachers are interested in using our EKG sensors to record an electromyogram (EMG), the electrical activity produced from muscle contractions. Recording an EMG is straightforward, but there are multiple ways that an EMG can be analyzed. The most...

Photosynthetic organisms such as plants and algae use electromagnetic radiation from the visible spectrum to drive the synthesis of sugar molecules. Special pigments in chloroplasts of plant cells absorb the energy of certain wavelengths of light, ...

Physics Meets Art in the General Education Core Marta L. Dark and Derrick J. Hylton; Journal of College Science Teaching, 2018, (47) 3. If you take the Physics and the Arts course at Spelman College in Atlanta, Georgia, you will be exposed to many a...

Heat Evolution and Electrical Work of Batteries as a Function of Discharge Rate: Spontaneous and Reversible Processes and Maximum Work Robert J. Noll and Jason M. Hughes; J. Chem. Educ., 2018, 95, pp 852−857. This article describes an experime...