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O'Donoghue, J.; Fitzsimmons, L. – Journal of Chemical Education, 2022
This work describes the design and testing of a low-cost light-emitting diode (LED)-based nephelometer for turbidity analysis. It also describes the use of this nephelometer for context-based learning (CBL) experiments designed for teaching laboratories. The LED nephelometer is simple, low-cost, and robust, providing similar results as a…
Descriptors: Chemistry, Science Instruction, Light, Measurement Equipment
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Sayer, Ryan; Maries, Alexandru; Singh, Chandralekha – Physical Review Physics Education Research, 2017
Learning quantum mechanics is challenging, even for upper-level undergraduate and graduate students. Research-validated interactive tutorials that build on students' prior knowledge can be useful tools to enhance student learning. We have been investigating student difficulties with quantum mechanics pertaining to the double-slit experiment in…
Descriptors: Quantum Mechanics, Interaction, Tutorial Programs, Student Improvement