Rubik's Abacus Montessori Intelligence Game Educational Toy There are 30 Color Cards in the Box. It is shipped disassembled and installation takes only 30 seconds. Benefits: -Learning colors -Develops quick thinking and correct decision-making functions- -Enables critical thinking- -Strengthens problem-solving ability- - It affects the ability to establish cause and effect relationships. - It helps people act in a planned and programmed way. - It gives motivation and concentration. - It keeps the mind clear and alive. - It strengthens the memory.