What is a significant disadvantage of using objects for demonstrations?

Using objects for demonstrations can indeed present notable safety issues. When instructors utilize physical items, especially tools or materials that could potentially harm students, there is a risk of accidents or injuries. For example, sharp instruments, electrical devices, or hazardous chemicals can create dangerous scenarios if not handled properly. Teachers must always consider the safety protocols related to any materials used in demonstrations and ensure that the demonstration environment is secure for all participants.

Additionally, safety concerns may necessitate extra precautions, such as requiring students to wear personal protective equipment or being closely monitored during certain activities. Therefore, while demonstrations can enhance learning, they also come with inherent risks that must be carefully managed to ensure a safe educational experience.