■Your child might just fall in love with math!
"Why do we learn math?" We do math without even knowing what it is. It feels like we shouldn't ask such questions. We feel pressured and forced to study math. No matter how hard we try, it seems difficult, incomprehensible, and distant. But is math really like that? Is math just for mathematicians? Pierre Cartier, a mathematician at the École Polytechnique, said, "The true ambition of mathematicians is for math to belong to everyone."
The 〈Easy Math〉 series shows that children can dream and think like mathematicians. Even a child just starting to learn addition can imagine, reason, and enter the world of math like mathematicians.

■The math book I want my child to read first!
The most common question students ask in math class is, "What do we learn math for?" "Who made this and why?" This book will provide the best answers to these questions. All fields of study exist out of necessity, and math is no exception.
As you turn the pages and nod along, you'll naturally come to understand the thoughts of those who created math. It covers elementary, middle, high school math, and even college-level content, but it's presented in a way that's easy for children to understand, making it enjoyable for everyone to read.
The math book I want my child to read first!
-Song Teacher (Math Teacher, Host of the math podcast 〈How Does Integration Help Me Buy Bean Sprouts?〉)

The world of math is wide open.
Math is freedom!
Let's do math easily! Freely and boldly!