New, unused. ● An item that allows you to study addition and subtraction in the bath! ● The answer is written on the back of the problem. ■ Specifications ■ Target age: 6 years old and up Contents: Addition cards x 90, Subtraction cards x 90 * Three Coins' "Bath Cards" are effective in supporting children's learning in a fun way. * Learning in a relaxed environment: Learning in the relaxed state of the bath promotes memory retention. * Parent-child communication: You can learn together with your child in a quiz format, which improves their motivation to learn. * Versatility: Waterproof and can be used outside the bath, and is also convenient to carry around.