When my children started learning to write numbers in kindergarten, I found that the fonts in most exercise book were designed in "printed fonts," which was not the ideal one we used in handwriting. Therefore, I decided to write two number tracing books to teach preschoolers traditional handwriting fonts for numbers. This book is the first edition, and is designed with "Regular script handwriting fonts," which are designed for children from 3 to 5 years old. The second edition of my number tracing books (ISBN: 9781792990427) are designed with " Fountain pen handwriting fonts ." The book is designed for children over 4 years old and has already practiced the first edition. (1).This book is designed with " Regular script handwriting fonts " a typeface that simulates human writing, to provide children the correct writing training, not "print fonts" which are commonly used in printed materials or digital devices. (2).This book comes with the most common examples of incorrect handwritings, and demonstrates how to hand write numbers correctly. (3).A correct pen-holding posture for children's reference is illustrated on the back cover. (4).Sitting correct and incorrect body posture for children's reference are illustrated on the back cover. (5).Each of the numbered practice page contains an encourage phrase to give the child motivation during practice. (6).Each number has an image to help your children remember the number. (7).The book provides easy 3x3 and 4x4 sudokus for children to develop their logical thinking. (8).The book also provides exercise for simple math addition and subtraction. (9).The numbers 1 to 100 are printed on the back cover to teach children odd and even numbers.