★ 185 core mathematical concepts have been successfully transformed into 185 adventure stories! This allows children to naturally grasp essential math concepts, from basic operations to logical thinking, through enjoyable reading, subtly cultivating a mathematical mindset that will benefit them for life.

★ Each book is enhanced with mathematical diagrams and exquisite illustrations, and features carefully designed interactive sections like "Math in Action Games" and "Brain Teaser Puzzles" (19 games + 47 puzzles in total). It also comes with scannable QR codes for listening to audio recordings of the stories.

★ Mathematics is a wondrous world waiting to be explored, filled with stories, puzzles and treasures.

This 6-volume series aims to build a complete, engaging, and systematic mathematical world for primary school children.

The core innovation of the series lies in transforming 185 key mathematical knowledge points into 185 independent adventure stories. Children will follow the protagonists as they travel through time and space, solve puzzles, and explore secret realms. They will learn the rules of arithmetic in the "Kingdom of Numbers," discover the mysteries of shapes in the "Castle of Geometry," and hone their reasoning and problem-solving skills in the "Labyrinth of Logic."

Each volume is scientifically graded according to the difficulty of concepts, ensuring progressive learning. The books not only tell stories with vivid language but also use clear mathematical charts and beautiful full-color illustrations to visualize abstract concepts, revealing the connections between ideas and significantly lowering the barrier to understanding.

Beyond the exciting storylines, the books feature two major interactive sections: "Math in Action Games" and "Brain Teaser Puzzles." Children can reinforce their knowledge through 19 fun, hands-on games and expand their thinking by tackling 47 classic puzzles. Additionally, professionally narrated audio is available to accompany the text.

This series shows children that mathematics is not just symbols on a classroom blackboard, but a master key for solving real-world problems and understanding how the world works.

The R&D Team

This is a dedicated collective comprised of senior education experts, teaching researchers, and frontline teachers with extensive experience in competition coaching. They possess a deep understanding of the cognitive development patterns of primary school children and have accurately pinpointed the intersection between China's basic education curriculum standards and advanced skill development. The team's core work goes beyond mere compilation of exercises; it involves "educational design." Everything from the overall curriculum planning and gradient setting of teaching progressions to the strategic arrangement of each model problem and practice exercise undergoes repeated scrutiny to ensure the efficacy of its methodology (the "modular" teaching model). This approach of driving product innovation through professional pedagogical research guarantees the content's foresight and practicality.

Part 1

I. Position
Lesson 01: Front & Back – The Talking Cat
Lesson 02: Up & Down – The Spiky Watermelon
Lesson 03: Left & Right – The Reversed Carrot
Math Fun: Integrated Activity (p. 14)

II. Comparison
Lesson 04: Comparing Lengths – The Magic Grid House
Lesson 05: Comparing Heights – Giraffe and Soft-Paw Cat
Lesson 06: Comparing Weights – The Magician

III. Understanding 1–5 and Their Addition & Subtraction
Lesson 07: Ordinal & Cardinal Numbers – Chipmunk’s Warehouse
Lesson 08: Addition & Subtraction – Chipmunk’s Picnic

V. Understanding Shapes (1)
Lesson 09: Cuboids, Cubes, Cylinders – The Missing-Hole Block City
Math Fun: Integrated Activity (p. 55)

VI. Understanding 6–10 and Their Addition & Subtraction
Lesson 10: Sharing – Lucky Magic Contest
Lesson 11: Smart Number Arrays – Maze Orchard
Lesson 12: Math in Queues – Mrs. Rain’s Hangover Soup

VII. Understanding 11–20 & Addition Within 20
Lesson 13: Bead Arranging – The Unknown Box
Lesson 14: Making-Ten Strategy – Snowman’s Candy Gourd
Math Fun: Integrated Activity (p. 83)

VIII. Telling Time
Lesson 15: Calculating Time – Ice Princess
Lesson 16: Patterns in Clocks – Ice Palace
Math Fun: Integrated Activity (p. 94)

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Part 2

I. Understanding Shapes (2)
Lesson 01: Plane Figures – The Painting Blown Away by Spring Wind
Lesson 02: How Many Bricks Are Missing? – Seaside Magic Cottage
Math Fun: Integrated Activity (p. 105)

II. Subtraction Within 20 (Regrouping)
Lesson 03: Teen Number Minus 9 – The Exam-Loving Magic Wardrobe
Lesson 04: Teen Number Minus 8, 7, 6 – The Runaway Candy Jar
Lesson 05: Teen Number Minus 5, 4, 3, 2 – Captain and Dolphin

III. Classification & Organization
Lesson 06: Classification & Organization – The Giant-Panda Gourmand

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