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学习目标:1.由四边形折纸复习平行四边形和特殊的平行四边形的相关知识;2.培养动手实践能力,通过四边形折纸加深对四边形的认识;3.在折纸中体会数学乐趣,进行数学思考,提升数学的综合素养。知识导航:木头经过设计,可以做成精美的鲁班锁。古时候桥梁的搭建也是不用钉子的。李克强总理送给默克尔总理的礼物就有鲁班锁。普通的纸通过折
Learning objectives: 1 by quadrilateral origami review parallelogram and special parallelogram related knowledge; 2 cultivate hands-on ability, through the quadrilateral origami deepen understanding of the quadrilateral; 3 in the origami experience math fun, mathematical thinking, promotion Mathematical comprehensive literacy. Knowledge Navigation: After the wood design, you can make a beautiful Luban lock. In ancient times, bridges were also built without nails. The gift given by Premier Li Keqiang to Prime Minister Merkel is Luban Lock. Ordinary paper through the fold