Engino Simple Machines Set, Building Kit for Young Inventors, STEM Projects for Kids Ages 9+

Start with Levers & Linkages to see how changing fulcrum position or linkage geometry multiplies force and traces precise paths (e.g., Peaucellier-Lipkin and Hart straight-line linkages). 

Move into Wheels, Axles & Inclined Planes to measure how gradient and friction affect the effort needed to move loads and convert rotation into useful linear motion.

With Pulley Drives, compare fixed vs movable pulleys and multi-pulley systems to relate speed ratio, weight, and effort which are core to understanding lifting machines.

Cams & Cranks then show how rotational motion becomes reciprocating and back again in powering oil pumps, sewing machines, and more.

Finally, Gears & Worm Drives develop intuition for gear ratio, direction change, torque, and speed in compact gear trains.

Each module ships with a booklet of theory, experiments, and quizzes plus printable/online instructions and 3D app support so young learners can read, test, and build like real junior engineers.