Kids from 25 schools across Northland proved their superb engineering skills at this year's Northpower EPro8 Challenge, a hands-on science competition with exciting experiments.
Applying different science knowledge and using a lot of teamwork, students from years 5 to 8 were challenged to build roller coasters, automated supermarket trolleys and more.
After several days of tinkering and calculating, organiser Andrew Thiele has crowned the winners of last week's heats who will face each other in the grand regional finals this Wednesday and Thursday.
"We're at the start of the school year and the children didn't have much time to practise so it's amazing what they were able to achieve," Thiele said.