Teaching aids for pupils in the classroom

摘要

a class classroom educational aid device, comprising a display panel and at least two mobile phone attachments, with LED indicators on the display panel having the same number as mobile phone attachments, and where each mobile phone attachment includes a U-shaped base body, an infrared generator and an infrared switch, and where a U-shaped attachment groove is provided on the inside of the U-shaped base body for attaching a mobile phone,and where a receiving end of the infrared switch and the infrared generator are located in the U-shaped attachment groove and where the receiving end of the infrared switch is located on the opposite side of the infrared generator, the infrared emitted by the infrared generator at the receiving end of the infrared switch is blocked when the mobile phone is inserted into the U-shaped base body; the infrared switches and the LED marker lamps are connected accordingly.