Liu Hui and Pi - Let's Rewind! - Heroes Who Changed Every...

What this episode covers

Step back to ancient China for a MEGA exciting math adventure! Join Ben & Pia as they tell the unbelievable story of Liu Hui, the brave thinker who chased the secret number inside every circle by building shapes with thousands of sides. What makes this story special for young explorers? It shows patient thinking, clever tools like counting rods and ink brushes, and how careful steps can solve BIG mysteries. This is a calm, curious journey from sketches to true numbers — perfect for anyone who loves discovery and wonder! Historical Fun Fact: Liu Hui used the method of exhaustion by doubling polygons up to thousands of sides to put tight bounds on the value of pi long before modern calculus existed. Did you know? Could you imagine approximating a circle with a shape made of 3,072 tiny straight edges? How close do you think that gets to the real circle? Ben & Pia guide this tale with gentle curiosity and playful wonder. Which story do you want to hear next? #LetsRewind #LiuHui #History #MathAdventure #Pi #AncientChina #STEMStories

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Frequently Asked Questions

How long is this episode of Let's Rewind! - Heroes Who Changed Everything - Little Thinkers!?

This episode is 16 minutes long.

When was this Let's Rewind! - Heroes Who Changed Everything - Little Thinkers! episode published?

This episode was published on November 27, 2025.

What is this episode about?

Step back to ancient China for a MEGA exciting math adventure! Join Ben & Pia as they tell the unbelievable story of Liu Hui, the brave thinker who chased the secret number inside every circle by building shapes with thousands of sides. What makes...

Can I download this Let's Rewind! - Heroes Who Changed Everything - Little Thinkers! episode?

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