Does a tree falling in a forest still make a sound if nobody hears it? In this episode, Theo explores sound waves, vibrations, pitch, and how we actually hear the world around us.

Together with his curious mum, he breaks down how sound travels, why some noises are high or low, and how our ears detect vibrations. This fun, accessible conversation sparks curiosity in kids and families while making complex science ideas easy to understand.

Try it yourself:

• Play with different sound frequencies using Chrome Music Lab – Oscillators.

• Watch this StoryBots video: How Do Ears Hear? (Sing-Along) for a fun visual explanation.

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.