Seat the child in a quiet area with few distractions, preferably up front and close to the teacher. Avoid open doors and windows where children on the playground might be distracting.
Allowing the child to participate often. Ask the child questions, even if their hand isn't raised. Ask the child to help out writing something on the board, handing out papers, collecting papers. This gives the child a break from their chair as well as makes them feel more a part of the class.
Giving the child extra time to answer questions or complete tests and other assignments.
Preparing the student for transitions or changes in routines, such as field trips or changes from one activity to another. Give the 5-minute warning that things are about to end or change.