What are binary, base 10, and hexadecimal — and how do different number systems actually work?

In this episode, Theo explores how numbers can be represented in different bases, breaking down binary, base 10, and hexadecimal in a fun, simple, and accessible way. He explains how these number systems compare, how counting changes in different bases, and why understanding them helps us see maths in a whole new way. This curiosity-led conversation makes big maths concepts engaging and (hopefully) easy to understand for curious kids and families.

Try it yourself:

Test your skills with the hex colour guessing game: https://yizzle.com/whatthehex/

Sources & further learning:Watch this helpful YouTube explainer video 'HEX CODE for Dummies (The Non-Technical Guide) (Base-16)' by @tutvid on number bases and hex: https://youtu.be/6cJd7eyYBFs

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.