Method and apparatus for demonstrating polynomial algebraic operations
    3.
    发明授权
    Method and apparatus for demonstrating polynomial algebraic operations 失效
    用于演示聚合代数运算的方法和装置

    公开(公告)号:US3858332A

    公开(公告)日:1975-01-07

    申请号:US39165073

    申请日:1973-08-27

    申请人: RASMUSSEN PETER

    发明人: RASMUSSEN PETER

    IPC分类号: G09B23/02

    CPC分类号: G09B23/02

    摘要: An assembly for the demonstration of algebraic or arithmetic operations by the manipulation of a plurality of rectangular elements of different sizes and shapes and characterized by the incommensurability of selected width and length dimensions thereof, and the distinguishability of opposing faces of the elements to denote positively and negatively oriented elements.

    摘要翻译: 用于通过操作多个不同大小和形状的矩形元件来演示代数或算术运算的组件,其特征在于所选择的宽度和长度尺寸的不可比性,以及元件的相对面的可区分性,以表示积极和 负面的元素。