100 Puzzles, Ages 4 and Up is a collection of engaging and educational tasks specifically designed to stimulate critical thinking and develop problem-solving skills in four-year-olds. Including a variety of puzzles such as simple rebuses, matching problems, mazes, and matching games, this book offers many opportunities to develop logic, attention, and spatial awareness. The tasks are selected to be interesting and doable for children of this age, ensuring their learning interest and motivation to learn through play.