PUPILS at Our Lady of Lourdes Primary School, Seven Hills have crashed through building-based experiments with curious minds and the help of their MyScience mentors.
The program gets people with relevant knowledge to mentor primary school pupils as they learn science and student participation has doubled in the past two years.
MyScience co-ordinator Sally Biskupic said pupils from years 3 to 6 turn their own question into a valid science experiment.
"Part of the strength of it is that the kids are the ones driving the investigation," she said.
"The mentors help them to think through what it is they're trying to do.
"We tell them the pneumonic 'Cows Moo Softly' — Change one thing, Measure something, and keep everything else the Same.
"That's how you do a fair test experiment."
Mrs Biskupic said pupils had access to their mentors' expertise through visits and an online forum where they could ask questions.
Experiments on building structures and materials have included whether water can soundproof a wall and what angle a roof must be pitched at for snow to slide off.
Year 6 pupil Nicholas Pracey, 12, designed an experiment to test the durability of different house materials in the face of a flood.
"I'm trying to find out which one is the strongest, so I've got a wooden one and a paper one," he said.