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Molecular biologists and biochemists are always talking about their sample’s 260/280 ratio. It is so commonly used that entire instruments are dedicated to displaying this value when analyzing a sample. The A260/A280 ratio is a procedure that tells scientists the...

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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......
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We have had a lot of fun with the Robotic Hand project, which we discovered in the Hacking STEM Library from Microsoft®. Using our ,......
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Have you ever done an experiment that you wish you could repeat with different chemicals or concentrations but lacked the time and materials? This is......
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Normal and rectified EMGs recorded from the forearm Many teachers are interested in using our EKG sensors to record an electromyogram (EMG), the electrical activity......
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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......
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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......
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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......
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Students from Croatia and Japan use Go Direct sensors in Killarney National Park. In July, more than 100 students from 35 countries used our Go......
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The Paleontological Research Institution in Ithaca, NY, has produced its latest book in the Teacher-Friendly Guides™ series, The Teacher-Friendly Guide™ to Climate Change. This guide......
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