The Hanoi Tower, also known as the Tower of Hanoi, is a classic mathematical puzzle and educational toy for children. It consists of three rods and a set of disks of different sizes, which can slide onto any rod. The objective is to move the entire stack of disks from one rod to another, following specific rules: only one disk can be moved at a time, and no disk may be placed on top of a smaller disk. This toy helps develop problem-solving skills, logical thinking, and sequential reasoning in young children.