The electronic / electrical circuitry allows students to cycle through their own experiments, thereby creating real learning and working skills. The Element Box is a Plug-In. Students can see the actual device. With the symbol and the screen name clearly. And arranged adequately in the trial. Students are required to bring their own devices (Element) along the experimental circuit on the Plug-In Experiment. Plug-in panel has a slot for plugging in the device and connecting the experimental circuit. Power supplies and power generators are available for simultaneous experiments on the experimental boards. (No need to purchase Power Supply, Function Generator) Students can adjust the parameters. And measure the signal easily and safely. Students can clearly see the work cycle.