Teaching aid

• Main Authors: CHEN QINGYING, WANG XUEJUN
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2018
• 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 first substrate and a spiral piece; the spiral piece is connected to the first substrate, the projection of the spiral piece at theupper end face of the first substrate is wave lines, the line widths of the wave lines are the same, and the wave lines extend to the second preset position at the upper end face of the first substrate from the first preset position of the upper end face of the first substrate. The technical problem that no special teaching aid exists when a trainee is trained is solved. 本申请公开了种教具。所述教具包括第基板和螺旋形件；螺旋形件连接在第基板上，螺旋形件在第基板上端面的投影为波浪线，且波浪线的线宽相同，波浪线由第基板上端面的第预设位置的延伸至第基板上端面的第二预设位置。本申请解决了受训者进行训练无专用教具的技术问题。