This book is specially written for children aged 5-6 years. It is designed to gradually introduce the child to the first mathematical concepts in a playful way. Its goal is to familiarize the child with geometric shapes, spatiotemporal concepts, sizes, comparisons, sequence of events, and numbers from 1 to 10. Through situations, puzzles, and games, children's critical thinking is developed, and they get to know the world of mathematics in such a way that the transition to elementary school becomes easier through interesting activities where structured thinking plays a dominant role.

If you are a 5-6 year old kindergartener, learn that this year Mr. Number will come along with his friends, the first numbers, to kindergarten! Many exciting activities are hidden in the pages of the book you are holding. And once you get to know Mr. Number and his friends, and play and learn so much, everyone will surely say that you are indeed a kindergartener in action!