'There is no planet b' is the theme for this years Kids4Kids program, aiming to get pupils around Tasmania discussing sustainability and what changes they want to see and finding solutions to empower them.
Department of Education sustainability educator Jenny Dudgeon said the pupil's desire for change was felt in schools and in government, as they wrote to councils, mayors and state ministers about their perspectives.
"It's about students voices, it's kids saying well look we're really concerned about the canteen...such as the use of non-recyclable containers and then they've done a waste audit to show what they were seeing in their bins and saying we would really like to make a change.
"It's kids talking to their principals...whereas before this hasn't been the case because they are kids," she said.
Students participated in a range of activities including a swap meet, where they brought in old toys, games and books to swap, looked at waste pyramids and made paper with recycled cardboard.
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Riverside Primary School's Lucy Walker said her favourite activity was the walk around the Newnham campus to spot habitats of wildlife and seeing videos captured by motion detection sensors.
South George Town Primary's Lauren Archer said she enjoyed the lino printing onto calico bags the most.
UTAS education lecturer Dr Kim Beasy said it gave pupils the opportunity to share their learning with peers and connect with groups across the community who were working towards the same goal, environmental sustainability.
"The activities have been designed to engage them with their respective places, develop their understanding of the issues and sustainable practices they can adopt, and hopefully inspire them to be our next generation of advocates for the world's future," she said.
The education department has been running the event for 10 years, with about 1000 pupils participating this year in partnership with the Environmental Protection Authority and UTAS.