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Special children need to teach a lot of content, such as kitchen knives, gas switches can not touch, I think this is the "additional" education method, the teaching efficiency is low. So, I used signals to make two instructions-"safe" and "danger". Parents only need to place an environmental module next to the dangerous item. When the child approaches the environmental module, the danger alarm of the bracelet will be triggered to assist in identifying the dangerous item. Forming a closed loop of people-products-environment, I designed the "multiplication" education method, which improves teaching efficiency and guarantees children's safety
Gao Wei Liu,