Sydney-based e2 Young Engineers has included the city in its 2020 country NSW tour aimed at boosting appreciation for STEM (Science, Technology, Engineering and Math).

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"When you think of science in schools, most people picture a teacher with a lab coat scribbling formulas on the whiteboard" said spokesman Chee Wong.

"We make functional motorised Lego prototypes of race cars, jelly blenders, drills, compactors and much more.

"Obviously the students are having fun but more importantly they are also learning about gears, pulleys, motors and the underpinning science and technology in a highly engaging manner."

Mr Wong said LEGO helicopters taught students about the physics underpinning flight.

"LEGO washing machine teach students about torque and centrifugal forces," he said.

"LEGO compactors are used to explore the positive and destructive nature of vibration.

"There is so much we can learn using Lego as the prototyping tool."

Mr Wong said workshop participants were "constantly counting, multiplying and solving problems" when building LEGO models.

Dubbo South Public School will host the workshops on January 13 and 14.

To register visit www.trybooking.com/BFQQU .

For more information go to www.young-engineers.com.au .