Description Brain growth starts at age 3 — nurture integrated thinking through left-brain and right-brain development! Why is brain development important during infancy and early childhood? The human brain begins to develop distinct functions in the left and right hemispheres starting around age 3, and by age 8, it reaches about 70% of its adult size. As this functional differentiation deepens, the brain develops significantly, but an imbalance between the left and right hemispheres can also occur. If this critical window is missed, it becomes difficult for brain functions to develop evenly, and the effects of brain development activities may be diminished. In particular, because our children grow up in educational and everyday environments that tend to favor left-brain development and right-handed activities, it's especially important for them to experience balanced stimulation and diverse experiences at a young age. The left brain is centered on language function and handles rational, logical cognition and thinking, while the right brain is centered on visual ability and handles emotional, holistic cognition and thinking. Because of this, the learning methods that stimulate the left and right brain are also different. However, the two hemispheres don't work independently — they constantly exchange information, and through systematic learning, they create integrated thinking and function together. Stimulation and learning methods appropriate to each developmental stage lead to balanced development of both hemispheres, laying the foundation for raising creative leaders. Discover the brain development project "Left Brain & Right Brain Development 12 Weeks," recommended by the KAGE Gifted Education Academy, which has developed educational programs for gifted children for over 30 years. Detailed Images Author Introduction Author: Samsung Publishing Editorial Department Table of Contents Left Brain Development 12 Weeks, Volume 1 Left Brain Development 12 Weeks, Volume 2 Right Brain Development 12 Weeks, Volume 1 Right Brain Development 12 Weeks, Volume 2 Publisher's Review Brain development should begin at age 4. "Left Brain & Right Brain Development 12 Weeks" is a brain development workbook designed to begin at age 4. Why age 4? Because while the brain's functional differentiation begins at age 3, it truly starts developing in earnest at age 4. This is a period when language ability develops and experiences expand — children begin asking "why?" to understand the world around them, and their imagination becomes remarkably rich. Since concentration and curiosity are also increasing during this time, learning materials suited to a child's developmental stage are extremely important. There's a specific approach needed for brain development. "Left Brain & Right Brain Development 12 Weeks" was developed based on research into infant and early childhood brain development by educational psychologists, and has been reviewed and recommended by the KAGE Gifted Education Academy — an organization that has advised on numerous media programs, including SBS TV's Gifted Talent Discovery, EBS TV's Mom is a Tutor, and the planning and writing of the Chosun Ilbo's "Fun Thinking Games" series. Brain development has an optimal timing for each stage. The more closely learning is matched to a child's age, brain region, and ability level, the faster and more evenly their brain grows. The brain must be developed with left-right balance. "Left Brain & Right Brain Development 12 Weeks" is a brain development workbook designed around the distinct functions of the left and right hemispheres. The left brain should be trained through language-based skills such as math, general knowledge, logic, comparison, and listening memory, while the right brain should be trained through visual-based skills such as space, shapes, discrimination, patterns, creativity, and visual memory. However, the left and right brain don't operate entirely independently — they constantly exchange information to produce integrated thinking. Only when both hemispheres are developed in balance can complete brain development occur, effectively boosting creativity, inquiry skills, problem-solving ability, and overall learning capacity. Once you understand the question types, you can do brain development together with your child. "Left Brain & Right Brain Development 12 Weeks" labels the type of problem on every page. Each page indicates which ability is needed to understand the question, making it easy to see which types your child is strong or weak in. Once you know your child's level for each type, you can approach brain development together in a more systematic and manageable way. "Left Brain & Right Brain Development 12 Weeks" — details that enhance the learning experience Top designers in Korea collaborated to create the most intuitive design optimized for understanding and solving problems. The interior pages use eco-friendly, high-quality imported Green Light paper that is gentle on the eyes and comfortable to write on, ensuring children don't experience discomfort while solving problems.