Leo and the Secrets of Mathematica: THE PARABOLIC KINGDOM
After exploring “The Garden of Numbers,” surviving “The Mind-Bender’s Game,” and understanding “The Realm of Relations,” do you think you’ve mastered the laws of the mathematical world? Prepare for a completely new challenge, where the world is no longer just predictable straight lines!
In this fourth volume, an ancient enemy has awakened: The Linear Tyrant. He despises the complexity, the natural curves of the universe. He wants to “flatten” Mathematica, turning every graceful parabola, every soaring trajectory into dull, monotonous straight lines. The beautiful Parabolic Kingdom is on the brink of being erased!
And this time, Leo must begin his journey alone. But he won’t be alone for long. Along the way, he will meet and ally with talented new friends:
- Lyra: The Celestial Maiden of Orbits, who can read the angles of the universe with the magic of Trigonometry.
- Arcus: The Archer of Trajectories, a master of firing arrows that follow perfect Parabolic
Together, they must learn to combine their strengths to face daunting intellectual challenges:
- Measuring unreachable heights using Sine, Cosine, and Tangent.
- Building and solving Quadratic Equations to control trajectories.
- Discovering the Ultimate Formula that can break any seal.
- Navigating the Polynomial Labyrinth and decoding the secrets of circles.
- Analyzing data and calculating probabilities to find the true path.
The battle to save The Parabolic Kingdom is about to begin!
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Leo and the Secrets of Mathematica: THE REALM OF RELATIONS
If in the previous books you joined Leo to conquer numbers and win games of logic, this adventure will take you to an entirely new level. We will enter a world defined not by individual things, but by the invisible yet powerful relationships that bind them together.
Have you ever looked at the Pythagorean Theorem and wondered why the three sides of a right-angled triangle share such a magical connection? Have you ever felt that a “function” is just an abstract, confusing concept?
What if the Pythagorean Theorem wasn’t a formula, but the key to ascending a majestic mountain range? What if a function wasn’t just y = f(x), but the secret rule of magical machines that could transform reality? And what if solving a system of equations was the only way to find the single point where two powerful rivers of energy intersect?
In this third volume, Leo will face The Bond-Breaker, an enemy who desires not chaos, but the destruction of the very relationships that give mathematics its beauty. And this time, Leo will be without his familiar companions. He must forge new alliances on his own: with a master forgesmith who only trusts what can be measured, and with a wandering spirit who sees the world only through the lens of relationships.
This is not a dry math textbook, but a thrilling fantasy adventure. Here, students can explore the world of Mathematica they love, all while learning and truly understanding the core concepts aligned with Grade 8 (US & Canada) and Year 9 (UK & Australia) mathematics in the most natural and exciting way. This journey is also a perfect gift for anyone—older students, university students, or parents—who wishes to rediscover the wonder hidden behind the numbers.
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Leo and the Secrets of Mathematica: THE MIND-BENDER'S GAME
If in the first book you joined Leo in a battle against chaos in “The Garden of Numbers,” a brand-new challenge awaits in this adventure. The enemy is no longer a physical monster, but a more subtle, more cunning force: The Mind-Bender. He does not destroy; he quietly twists the very rules of logic, crafts clever paradoxes, and sows doubt into the truths that have always held firm.
Leo’s journey now requires not just courage, but a sharper logical mind than ever before. He will have to:
- Restore the balance in the Kingdom of Proportionality.
- Survive the freezing Sea of Rational Numbers.
- Navigate the Labyrinth of Logic with its multi-step equations and inequalities.
- Uncover the mysterious theorems of the Citadel of Triangles.
- And confront a harsh reality: sometimes, a one percent tragedy can still happen, even when all calculations say it is nearly impossible.
This is not a dry math textbook, but a thrilling fantasy adventure into the world of mathematics. Here, students can follow Leo on a captivating quest, exploring the world of Mathematica they love, all while learning and truly understanding core concepts in the most natural and exciting way possible.
This book is designed to accompany students between the ages of 12 and 14, with content that aligns perfectly with the Grade 7 curriculum in the US and Canada, Year 8 in the UK, and Year 7 in Australia.
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LEO AND THE SECRETS OF MATHEMATICA: The Garden of Numbers
For eleven-year-old Leo, math is nothing but a wall of boring, impossible problems. Until the day a problem fights back…
Stuck inside on a rainy afternoon, Leo wishes for any escape from his dreaded ratio homework. His wish is answered in the most unexpected way when a mysterious, glowing insect with geometric wings lands on his textbook and opens a shimmering portal—right on the page.
Pulled into a world beyond his wildest dreams, Leo finds himself in Mathematica: a magical garden where the trees are geometric shapes, the rivers flow with ratios, and the secrets of the universe are written in numbers.
Cross rivers by solving puzzles on the shells of enchanted Fraction Turtles.
Navigate a crystal maze guarded by mischievous Skew-Goblins.
Confront the fearsome Composite Beast with the power of prime numbers.
Unlock ancient secrets by learning the foundational language of algebra.
The Garden of Numbers is the first book in the Leo and the Secrets of Mathematica series, perfectly blending a page-turning fantasy adventure with the core concepts of Grade 6 mathematics. Designed for students aged 11-13 (US & Canada Grade 6, UK Year 7, Australia Year 6-7), this story makes learning intuitive and fun, covering:
Ratios & Proportions, Fractions & Decimals, Geometry & Area, Prime Numbers, Negative Integers, and the foundations of Algebra.
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Little Ant's Space Voyage
A science fiction story about a group of animals traveling to the Moon.
Welcome to the thrilling adventure of five animal friends: tiger, squirrel, rabbit, wolf, and ant – the tiny yet determined hero! Once a shy ant mocked by classmates in Teacher Elephant’s STEM class, he left school feeling defeated. But at home, his parents ignited his curiosity with science – building a bicycle, unraveling the magic of light bulbs, and gazing at the stars. With newfound confidence, Ant returned to class, ready to shine.
This time, Ant was no longer timid. Using a clever lever idea, he heroically saved Teacher Elephant from a sinkhole during an earthquake, inspiring everyone. Then came the ultimate challenge: Teacher Elephant launched a project to build a spaceship to the Moon! With creativity and teamwork, the class turned their dream into reality.
Powered by a helium rocket, the five tiny astronauts soared into space. After facing thrilling obstacles, they landed safely on the Moon. Joy quickly turned to awe as new challenges emerged – treacherous terrain and mysteries begging to be solved. How will Ant and his friends overcome them? Will they make it back to Earth?
Dive into this inspiring tale to see how science turns the impossible into possible!
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My heart will go on
A romance, action and science novel imbued with humanity, set about one-third in Vietnam and two-thirds in the Netherlands.
Immerse yourself in a captivating blend of romance, action, and science with my novel. The story unfolds with one-third set in Vietnam and the remaining two-thirds taking place abroad, primarily in the picturesque Netherlands.
Filled with a deep sense of humanity, the narrative embraces the values of truth, goodness, and beauty. Prepare to be swept away by the emotional journey as you experience moments of pure ecstasy in the romantic settings and find yourself moved to tears by the compelling characters within the story.
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About author
Bảo Khanh, whose real name is Nguyễn Duy Khanh, was formerly a scientific researcher in the fields of physics and nanotechnology, as well as an Android developer. He is currently an online math teacher and a book author.
He holds a Bachelor’s degree in Engineering Physics and a Master’s degree in Nanomaterials and Nano Devices, both from the University of Engineering and Technology – Vietnam National University, Hanoi. Additionally, he earned a Bachelor’s degree in Culture from Hanoi University of Culture.
Bảo Khanh previously worked as a researcher at the Institute of Nanotechnology – Vietnam National University, Ho Chi Minh City. His research areas included nanomaterials and nano devices applied in electronics, biology, molecular biology, and biomedical science.
See me on Amazon Author Page: https://www.amazon.com/author/baokhanhbook