Zero feels simple — but it quietly changes everything.

In this episode, Theo explores the big maths question: why zero isn’t “nothing” and how it quietly powers everything in maths and the world around us. Together with his curious mum, he explains how a symbol for nothing became one of the most powerful ideas humans have ever invented — in a fun, simple conversation perfect for curious kids and families.

This curiosity-led discussion encourages critical thinking, sparks a love of learning, and makes complex maths ideas like zero accessible and engaging.

Sources & fact-checking:Topics discussed reference the YouTube channel Numberphile. Links to specific videos are in the show notes.

Main show description:

Theo Casement is a curious kid with a thirst for facts, and in this short, family-friendly podcast he explores big questions about maths, science, and how the world works through relaxed, curiosity-led conversations.

This podcast is designed to spark curiosity and a love of learning in children and families, encouraging discussion and exploration rather than formal teaching. Perfect for curious kids, parents, and educators who enjoy learning through conversation and big ideas explained simply.

Follow us on Instagram @educasement for extra resources, visuals, and topic support linked to each episode.Got a big question you’d like Theo to explore? Get in touch — we’d love to hear from you.

Fancy a shout out or would you like to make a guest appearance? Send us some details in the comments and we'll get back to you.