Academo interactive demonstrations
Academo is an online hub of free, interactive, educational demonstrations that have been used by schools and educational institutions all around the world. Amongst many others, some of the most popular demos include a virtual oscilloscope, a vector plotter and a logic gate simulator. The website is fully open-source.
Virtual Oscilloscope
This online virtual oscilloscope allows you to visualise the waveforms of live sound input and get to grips with how to adjust things like the time base and gain. Why not try it in conjunction with different musical instruments?
Logic Gate Simulator
A simple, online logic gate simulator you can use to investigate the behaviour of AND, OR, NOT, NAND, NOR and XOR gates. Combine the gates in any way to see how they work in conjunction with each other.
3D Vector Plotter
Help your learners visualise 3D vectors with this interactive plotter. The draggable and zoomable display can also show the resultant, difference and cross product of two vectors.