• Cover of A Guide to Making Friends in the Fourth Dimension, showing whimsical illustrated characters in a colorful, isometric mathematical landscape.
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A Guide to Making Friends in the Fourth Dimension

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Expected release date: July 2025

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Step into a world of mathematical fantasy, where curious characters guide you on an adventure that will spark your imagination. 

In A Guide to Making Friends in the Fourth Dimension, you’ll uncover the meaning of dimensions, explore the possibilities of a two-dimensional world, and even venture into a mind-bending four-dimensional space—all brought to life with color illustrations by Martina Pepiciello.

Along the way, you’ll encounter mirror life, play with fractals, and learn how a four-dimensional creature could steal gems from a safe without a key or even peer directly into your brain.

This book invites you to stretch your mind and be inspired by mathematical thinking. It will help you to overcome math phobia and plant the seeds of a lifelong interest in higher-dimensions.

Some of the most important ideas in theoretical physics and math are presented here in ways you have never seen them before. Whether you're a math enthusiast or a curious beginner, the playful storytelling will help you think about things differently and may even bring you closer than ever to visualizing complex shapes like the tesseract.

Featuring a foreword by Michael Stevens (Vsauce) and a guest chapter by CodeParade, this book is a real delight for curious minds.

Pre-order now to get instant access to bonus audio content: a modernized version of the classic book Flatland (1888) by Edwin Abbott, edited and narrated by Toby Hendy. This updated version features refreshed language to make it accessible and engaging for a wider audience.

Toby Hendy standing in a library holding books. Her hair is in a braid that reaches to her knees. She is smiling.

About me

Hello! I'm Toby Hendy, a science communicator who makes videos about science and mathematics on my YouTube channel, Tibees, where I have gained an audience of over 1.3 million subscribers.

I produced the award-winning short film Finding X and was a finalist for the 2024 Young Australian of the Year (QLD). A Guide to Making Friends in the Fourth Dimension is my first book.