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在北京师范大学出版的《初中数学》上册与华东师范大学出版的《初中数学》上册中都提到了七巧板。两本书都说七巧板是我国古代人民创造的一项益智游戏。你玩过七巧板吗？今天我和大家一起来玩七巧板！七巧板是我国人民在一千多年前创造出来的，其实这个历史可以更早，只是在12
Mathematical puzzles are mentioned in the “Junior High School Mathematics” book published by Beijing Normal University and “Junior Middle School Mathematics” published by East China Normal University. Both books say that the jigsaw puzzle is a puzzle game created by ancient Chinese people. Have you ever played a jigsaw puzzle? Today I’m playing jigsaw puzzles with everyone! Tangrams were created by our people more than a thousand years ago. Actually, this history can be earlier, only at 12