Normally it’s children who take part in the national Science and Engineering Challenge.
But on Saturday, 17 March, the kids were the marshals and the adults were competing.
First the teams had to wire up a board representing a city with electricity under half a dozen brain-busting scenarios.
The bridge-building challenge is probably the best known, turning some cardboard, tape and balsa-wood sticks into something that can bear a weight travelling across it.
John Walton, John Parsons and Rotary brought the Challenge to town at the request of the Paterson Allyn Williams Science Hub.
Michael Kelly, Deb Oirbans and Dungog High provided the venue and the half a dozen young marshals.
Lions Club provided a low-cost barbecue.
The next science hub events are on 14-15 April – the Autumn Koala Count and the Fungi Foray.
Go to the Paterson Allyn Williams Science Hub Facebook page for details.