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Product Name: Puzzle jigsaw puzzle 700 pieces per box

product origin: Zhejiang

product Size: 11.4*11.4 * 0.7cm

product Weight: 0.035kg

attention: There are really not many things you can buy for a few cents! This jigsaw puzzle is suitable for Taobao sellers for gifts. The quality and workmanship are not perfect, mainly because it is cheap. Dear friends, don't expect too much about the quality. Don't say why it is so bad after buying it back! If it is not as good as expected, you can return it, and the freight is paid by yourself!!

      Tangram, also known as Qiqiao diagram and wisdom board, is an intellectual toy spread among Han people. It evolved from several banquets in Song Dynasty. It was originally an indoor game of literati, and later evolved into puzzle board toys in the folk. According to Lu Yiyi in Qing Dynasty 《 leng Lu miscellaneous knowledge"Said: Song huang Bosi A few pictures of the banquet, with a long section of square table, are derived into 25 bodies and become 68 names. A few pictures of Ming Yan's butterfly are adapted to its system, with the shape of Pythagorean, making triangle Misshape, such as butterfly wings. Its Formula Three, its system six, its dozens have three, its changing formula, where there are more than one hundred. In the near future, there are seven coincidence Pictures, whose formula is five, whose number is seven, and whose changing formula is more than a thousand. The shape of the body is small, changing easily, and the tools of the game are enough to exhaust the boredom and silence, so the secular people like it." Now the jigsaw puzzle is cut from a square into five small hook-and-strand shapes, which can be pieced together into figures of various things, such as figures, animals and plants, houses and pavilions, car and boat bridges, etc., which can be played by one person, many people can also compete. Some important geometric relations can be clarified by using jigsaw puzzle, and its principle is the "principle of complement of entry and exit" in ancient arithmetic ".