Lunch time is always difficult to transition back to work, since the kids are all worked up. Maybe the students need an activity to get refocused when the come in. Do you simply read the story, or do the kids have their own books to follow along with? If they don't have individual books, maybe try to find materials they can all have and hold so they have something in their hands to hold and look at. I have found, especially with large groups, one teacher reading one book aloud tends to lose the student's interest.

Lunch time is always hard to come back from because they are full of new energy and were outside of the classroom. I suggest coming back in and doing a brain break like a GoNoodle or other dancing, moving activity to help get the jitters out. If possible, schedule recess for right after lunch time. This will help wear the students out and encourage them to relax and learn back in the classroom.

My best advice would be to make sure that the classroom rules are well in place. Maybe have a quick review of the classroom rules before the read aloud. Also, If you are doing the read aloud on the carpet, you can have the students who misbehave, sit at their desks during this time to eliminate their ability to goof off. Since they will be spread out.

Have assigned seats on the carpet, if this is where the activity takes place, review carpet rules before beginning such as keep your hands to yourself and stay in your space. If rules are broken students should be sent back to their desk to put their heads down for the remainder of the time.

Once students come back from lunch, I would try a quick little re-cap before getting right into a lesson. Once you have explained everything and went back what the students learned prior to lunch, they will have adjusted to being back into the class. I worked with a teacher who did this and it went pretty well.

Don't let them sit next to their best friends because that is where the disruption will start. Do something like Popcorn reading where whatever one student is done reading their part they pick the next students to read, that way all of them are on their toes and following along because they'll never know when it's there turn - its random

It should be known they will lose the privilege if they do not follow the rules during the activity. Maybe you can do a reader's theater so they can get some energy out while still getting their literacy time in.

After lunch try a transition the read aloud. They were more than likely goofing off at lunch, it's hard to turn the page sometimes

One solution you may attempt is to before starting the next read aloud is to go over the rules and consequences set for their behavior and actions. If the student behavior calmly and are attentive to the read aloud, they may pick the topic for the next book the following day.

Make sure you have a good behavior management system in place, and make sure that students who often talk are not sitting next to each other.

I would try to get the children more involved maybe read some plays and have them act the plays out. They are reading and interacting with the class at the same time.

Maybe try doing this activity at a different time during the day instead when the kids are hyper.

The students who goof off should be pulled away from the group to either sit next to the teachers desk or even in another teachers classroom while the read aloud is taking place.

I think you could do a fun little activity to get their lunch room wiggles out and then have them sit down and get ready for the book.

You should switch up how the read-aloud is performed each day. Maybe one day you read aloud to the students. Have the come in, sit in the reading area criss-cross-applesauce and explain that you expect full-body listening. Another day you may have the students take turns reading a passage. Switching things up and having the students feel more included may be a good solution to this problem.

use inside voices and take time away when they misbehave.