Allowing students to participate in the process of establishing rules gives them a sense of ownership and will solicit cooperation. Additionally, in the event a student chooses to act out, the other students will step up and encourage him to stop the unacceptable behavior. Ask the students questions such as, "Would it be okay for everyone to talk out of turn?" The obvious response will be no. Then ask, "What can we list as a rule so that students don't talk out of turn?" The conclusion will be that they raise their hands before they speak.
Once classroom rules have been established, list them on a large piece of paper. The next discussion should be the consequences of breaking the rules. For example, the first offense could simply result in a verbal warning, the second offense could warrant a time out, the third offense would result in removing the student from your classroom to another classroom, and so forth. You may also consider a contract between the students and yourself. The contract will list the classroom rules as well as the consequences. Have the students sign the contract and give them a copy that they take home to their parents/guardians.
Children should know that when they first walk into the classroom, there are expectations of them. Establishing a routine for them will make the morning run smoothly. For example, give them a cubby where they are to drop off their book bags, a carry cart to drop off their lunch, an inbox for homework and an assigned seat to go to. Morning news is usually the official start of the day, so as they are waiting in their seats, have something fun for them to do. You may allow silent reading, or have word puzzles and games for them to complete. Allow them time as they are getting settled in to socialize and catch up with the other students, provided they use their indoor voices.
The routine of each day should be posted near the rules sheet so that the students know when to expect reading, math, critical thinking and so forth. In addition to the curriculum, students often have special periods that vary from day to day. As part of your morning routine, introduce what days students have physical education, music or art. This could be included in the calendar portion of your morning, such as "Today is Tuesday and today's special is physical education." This is also a time when you should introduce any other variations from their routine.
As important as routine and schedules are consistency and fairness in enforcing them. Being firm, fair and friendly with the students from the beginning will result in the students taking the rules and the established schedule seriously. Some students have very little structure and security in their lives outside of school. As a teacher, you have the opportunity to be their safe haven.