Author's Note

A book for 7-year-olds preparing for elementary school, first graders, and students struggling with math.
“All children can learn math, and they should be able to do so.” - Reys

This textbook is great for first graders to use as a resource for learning math at school, but I also highly recommend it to seven-year-olds preparing for elementary school.
The reason why there is an increasing emphasis on early mathematics, especially in developed countries, is because children's number sense before entering school determines their later mathematical achievements.
It is also recommended for students who can add and subtract small numbers but lack confidence in math because the problem-solving speed is very slow.
As you engage in activities that involve moving numbers and experiencing them visually, you will find yourself gaining confidence in math skills.


The generation growing up now will live in a different era than the older generation.
And that era will require a deeper and broader level of mathematical thinking than we have today.
I hope this textbook will help you learn math more easily and enjoyably.