In this lesson, we discussed the concept of hazards and safety in using various electronic devices and equipment. A hazard refers to a risk or danger, while safety is the condition of being protected from these risks. We emphasized the importance of adopting safety practices, such as properly using and managing equipment, to prevent accidents. The lesson also covered specific examples of hazards, including potential dangers from misuse of machines and the need to be cautious with equipment, especially when not in use.