Teaching aid

• Main Authors: CHEN QINGYING, WANG XUEJUN
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2018
• Subjects: ADVERTISING; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; GLOBES; PHYSICS; PLANETARIA; SEALS

The invention discloses a teaching aid. The teaching aid comprises a base plate and at least three triangular pieces; the lower end face of each triangular piece of the at least three triangular pieces is fixed on the upper end surface of the base plate; each triangular piece is in an annular shape, the shapes of the outer edge and the inner edge of each triangular piece is equal to the equilateral triangle, and the geometric centers of the upper end surfaces of all the triangles of the at least three triangular pieces are arranged at the same position; one triangular piece of any two adjacenttriangular pieces is arranged inside the other triangular piece, and a gap exists between any two adjacent triangular pieces. The teaching aid solves the technical problem that a trainer does not have a special teaching aid for training. 本申请公开了种教具。所述教具包括基板和至少三个三角形件；至少三个三角形件中每个三角形件的下端面均固定在基板的上端面上；每个三角形件的形状均为环形，每个三角形件的外边缘和内边缘的形状均为等边三角形，至少三个三角形件中全部的三角形件上端面的几何中心均位于同位置；任意相邻的两个三角形件中个三角形件位于另个三角形件内部，且任意相邻的两个三角形件之间存在间隙。本申请解决了受训者进