Why do maps lie? In this episode, Theo explores why no flat map can perfectly show a round planet and why some countries appear much bigger or smaller than they really are.

Together with his curious mum, he explains how mapmakers make compromises when representing the globe on a flat surface, and why this doesn’t mean maps are “wrong” — it’s just how projections like the Mercator work. This fun, accessible conversation makes complex geography ideas easy to understand and sparks curiosity in kids and families.

Learn more: Check out The True Size website to explore the Mercator Projection and see how countries really compare.

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.