The Transformer: Simulation Lecture Demo part of comPADRE Pedagogic Library:Interactive Lectures:Examples
In a physics lecture, the class is presented with a simulation of the operation of a transformer. The students are presented with a question involving the qualitative relationship between the input and output emf and the number of turns in the primary and secondary coils. The starting point of the simulation is a transformer with equal number of turns on the primary and secondary. The students are asked how the output voltage changes as the number of turns in the primary and secondary is altered.
Think-Pair-Share Analysis of the Operation of a Metal Detector part of comPADRE Pedagogic Library:Interactive Lectures:Examples
In a physics lecture, the class is presented with a simplified model of a metal detector. The class is asked to discuss the operation in groups of two or three students. Once the groups come to a conclusion, the class is presented with a list of possible features of the explanation and asked to indicate the options their explanation supports. Two additional questions to clear up misconceptions are presented. The class is asked to correct their explanation after these questions. Once a consensus is reached a simulation demonstrates the correct explanation of the function of a metal detector. This activity allows the students to use their knowledge of magnetism and Faraday's law to understand an interesting real-world device. The students work cooperatively and the device's operation is ultimately demonstrated by a colorful simulation.