算盘、比例尺、计算尺。现收藏于温州数学名人馆。
有时人们认为数学教具是神奇的事物。
Sometimes people think there is something magic about sensorial math materials.
介绍了新数学教具的开发设计理念和结构功能。
This article introduces the exploitation design thoughts and the structure functions of the realia of the new mathematics system.
当艾米丽给孩子们上数学课时，她突发奇想，设计一套数学教具的想法在她的脑子里应运而生。
The idea to design a math teaching aid came about while Emily was teaching math classes to the students.
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