This book, part of the "Step by Step" series, offers a scientifically grounded and systematic approach to teaching mathematics for Kindergarten 1 (KG1) children aged 3 to 4 years. It is meticulously designed to foster early mathematical understanding and skills through engaging and age-appropriate activities. The curriculum ensures a solid foundation in fundamental concepts, utilizing a step-by-step methodology that aligns with established educational principles. This resource provides educators and parents with a structured pathway to introduce young learners to the exciting world of numbers, shapes, and basic problem-solving, promoting cognitive development and a love for learning from an early age.