Final answer:
The 'hand over hand technique' refers to a method used for teaching proper handwashing and in physical therapy. It emphasizes the need to fully lather all parts of the hands for at least 20 seconds. It may also guide movements in therapy sessions or teach motor skills.
Step-by-step explanation:
The hand-over-hand technique is a method often used in various situations including learning proper handwashing, physical therapy, and in some driving instructor situations. The information provided suggests a focus on the health aspect, particularly in teaching the proper way to wash hands to ensure cleanliness and minimize the spread of germs. According to the Centers for Disease Control and Prevention (CDC), one should first wet hands with clean, running water, then apply soap and lather by rubbing hands together. It is important to cover all areas of the hands including the back, between fingers, and under the nails, for at least 20 seconds.
Instructors may also employ this technique in physical therapy to guide movements such as bending the hand upwards toward the shoulder or tilting it to the side away from the body. This can help stabilize the wrist and develop appropriate motion control. In addition, hand-over-hand may be used to teach motor skills such as guiding students in proper motions for activities, which could range from swinging an object in a horizontal circle to using hand gestures during science experiments to demonstrate concepts such as velocity and magnetic fields.