【Educational Value】 Numberblocks MathLink Cubes are an excellent tool for learning number concepts. Children can count numbers and learn basic arithmetic while playing. 【Set Contents】 This set includes activities for Numberblocks 1-10 and 11-20, allowing children to enjoy various mathematical activities using colorful cubes. 【Age Range】 Perfect for children aged 3 and up, this educational toy can be enjoyed by parents and children together. - Brand: Numberblocks - Product Name: MathLink Cubes - Target Age: 3 years and older - Set Contents: Numberblocks 11-20 Activity Set - Set Contents: Numberblocks 1-10 Activity Set 【Product】 Numberblocks MathLink Cubes 1-20 Activity Set Bundle 〈Activity Cubes for Learning Numbers 1-20〉 These block cubes allow children to learn arithmetic in a fun way by seeing and touching. The colorful cubes can be joined vertically, horizontally, and on all sides, offering various uses! In addition to building with the blocks, children can learn to classify by shape and color, and also use them for addition, subtraction, area, and volume calculations, making them a long-lasting math learning tool. Great for Christmas presents too! My family gave the same thing before, and they were very happy! ※This is a new, unopened, overseas product, so there may be some minor box damage, product imperfections, or missing parts. We are unable to provide support for these issues, so please only purchase if you understand and accept this.