A smart brain is built through practice! Help grow your child's thinking power with hidden picture puzzles! First, a variety of difficulty levels all in one book! This book includes hidden picture puzzles ranging from Level 1 to Level 4, with anywhere from 4 to 14 hidden items to find. Children can build a sense of achievement as they progress from easier to more challenging puzzles. As the difficulty increases, kids will experience an even greater sense of accomplishment with each puzzle they complete. Second, picture finding, problem solving, and vocabulary building all on one page! Each page combines two or more activities. After finishing the hidden picture activity, children observe the picture once more to solve related problems, which helps grow their thinking skills. Finally, by looking at the Korean and English words paired with the pictures, children can boost their vocabulary too. Searching for hidden pictures helps develop both the right and left sides of the brain at the same time. Third, observation skills and focus grow naturally through hidden picture play! Finding hidden pictures requires strong concentration. Some pictures can be spotted at a glance, while others require careful, detailed observation—helping to sharpen your child's focus along the way. Children who are used to the fast-changing screens of TV and smart devices often find it hard to concentrate for long periods. This fun picture-finding activity offers a great opportunity to help them practice sustained focus.