Learning Resources educational toy. This educational toy uses 10 connecting frames with 10 squares each to practice addition and subtraction, based on the number 10. I think this is an important tool to play with and develop a sense of numbers. I bought it in the US, so it only has an English instruction manual. Please use a translation app. All 165 pieces are included. The condition is very clean. It will be shipped in a waterproof zip bag and a Mercari bag. * This is an educational product intended for use by parents and teachers as teaching materials at home or school. * Warning: Contains small parts, not suitable for children under 3 years old. No pets, no smokers. Ships almost the next day. I'm moving to my own home and currently organizing things. I'm also selling clothes from brands like Mikihouse, Familiar, Patagonia, and Montbell, as well as children's educational toys and board games. I would be happy if you could purchase them together. I may offer a small discount for combined purchases, so please consider it. Thank you very much!