answer:Address is directly in class. Talk about the impact of talking. You might invite those who plan to talk to do so outside the class, leaving those in the class with an atmosphere where they can learn. Next time you catch them talking, ask them all to leave by name, and not come back in until you invite them in. Also let them know you will be going over material on the next quiz. They can get it from their classmates later, if the classmates are inclined to share. Or you can stare and be quiet. Just be quiet until they are quiet. Or you can go and stand next to them while you talk. Or you can ask them to share what is so important with the rest of the class. Or you can take off points for disturbing the rest of the class. Or give people who don’t talk extra credit. Oh so many things to try, and I’m sure there are a million more ideas.