New, Unused K'NEX Education Elementary Math and Geometry, 142 Pieces Educational Toy from America 【Product Details】 An educational toy manufacturer from America. By connecting plastic rod-shaped parts, you can assemble various objects. It is said to cultivate imagination and spatial awareness, which have been attracting particular attention in recent years for children's growth, and it is actively adopted in educational settings in America. Among them, the Education series is specialized for education. It is designed to understand the structure of algebra and geometry, Incorporating active learning, children can actively engage themselves. Target age: 6 years old and up It may be suitable for developing a scientific mind as a recreation for home study. Parts: 142 pieces Number of assembly models: Many, polyhedra Outer box size 31 cm - 31 cm - 6 cm -Condition- New, unused, stored at home The outer box is dirty, and the outer box has been checked by customs. The contents and various parts are unopened. Please refrain from purchasing if you are sensitive to this. For those looking for Christmas presents such as LEGO, blocks, those who don't want their children to play video games, retro games, and board games.