1. The 143-Storey Treehouse by Andy Griffiths & Terry Denton

2. The Illustrated Encyclopaedia of Peculiar Pairs by Sami Bayly

3. There’s a Ghost in this House by Oliver Jeffers

4. The First Scientists by Corey Tutt

5. Wandi by Favel Parrett

6. Pony by R.J. Palacio

7. If Not Us by Mark Smith

8. Always by Morris Gleitzman

9. The Gilded Cage by Lynette Noni

10. Daughter of the Deep by Rick Riordan

Racing to the top spot this week is the latest in the hilariously brilliant Treehouse series. We’re now up to 143 storeys and it’s just getting wackier!

The latest animal book written and illustrated by Sami Bayly is new to the list and focuses on diverse animals that form symbiotic relationships. It’s stunning!

Another science book explores the incredible scientific knowledge of First Australians and how this wisdom is still being utilised today.

And finally, this week we have three new young adult titles also make their debut on the bestseller list this week: a powerful story about a young man becoming engaged in climate activism, the second book in bestselling author, Lynette Noni’s new fantasy series, and a new novel from Rick Riordan, this time with a female lead and inspired by Jules Verne’s 20,000 Leagues Under the Sea.