A practical teaching kit that demonstrates how rotational friction affects the efficiency of popular machine elements, including screw jack, a wedge and different bearings.

Experimental teaching kit that demonstrates simple harmonic motion (oscillation) in springs and pendulums, and its usefulness.

Experimental teaching kit that demonstrates kinetic and static sliding friction and rolling friction on bodies and between different surfaces on a flat or inclined plane.

Experimental teaching kit that demonstrates the difference between potential and kinetic energy and how it can change from one to the other using a pendulum or flywheel. Also demonstrates elastic potential energy in a spring.