Answer:Make eye contact with Eric and signal him to stop.
Step-by-step explanation:
This is the best way to act without disrupting the flow of the lesson and without singling out the student and making them feel like they are put on the spotlight which may cause them to retreat negatively making the situation worse.
Sometimes when you call out a name of a student and tell them to quite down they may feel like they are being put on the spotlight and may not react well to that which may disrupt your whole lesson trying to bring back the students to focus again.