Number cards are educational tools used to help children learn and recognize numbers. They typically display a single number, often accompanied by images or dots that represent the quantity. These cards can be used in various activities, such as counting games, matching exercises, and number recognition drills, making learning interactive and fun. In addition to basic number recognition, number cards can also aid in teaching addition, subtraction, and other mathematical concepts. They are often used in classrooms and at home, providing a hands-on approach to learning that engages young learners and reinforces their understanding of numbers.