Kumon Method KUMON Kumon Educational Toys A, I, U, E, O Board Number Board 50 Number Board 100 With Case This is a set of the A, I, U, E, O Board, Number Board 50, and Number Board 100. The plastic part of the case shows some yellowing. I don't think there are any other stains besides the yellowing, but there may be some oversight. Please purchase only if you don't mind. All the magnets are present. The A, I, U, E, O Board can be flipped over to become the Number Board 50, allowing you to learn both. The Number Board 100 has a number guide on the front, and the back has only the squares without a guide, so you can use it according to your level of understanding. Type: Numbers, Hiragana