Helping Students in a Lab

Question: What are good techniques for students getting help in a computer lab setting?

The IT Guy says:
Use the motto, "Ask three, and then ask me." Students should get into the habit in the computer lab of asking other students technical questions before asking the teacher. Use a red plastic cup placed to the side of the computer as a signal. When a student needs help, he/she can put their cup upside down on top of their computer monitor instead of raising a hand. This is a silent but effective signal to the teacher to assist as soon as possible.

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