Have a quiet classroom. Cut out as much background noise as possible. Close doors and windows. Make sure students know the acceptable noise levels. Be an example to your students; speak in a quiet, calm voice. Avoid shouting at your class; students tend not to listen if you shout at them all the time.
Give clear, concise instructions for all activities. Have your student repeat what you have said so that you are sure he has understood. Avoid giving too many instructions at once; this can be confusing.
Play lots of listening games. Tell your students a word, then read a story. Have students listen carefully for the word and then clap when they hear it. Play rhyming games that involve listening to the distinct sounds in a word; write a word on the board, say it clearly, then change one letter to make a new word. Have students give ideas for more words that can be made by changing a letter.
Play memory games. Try "Simon Says." Give students instructions such as "clap your hands," but tell them they must carry out the action only if you say "Simon says" first. Play "I went to the store." Sit in a circle, then say this phrase and add what you "bought." Have the next student repeat what you said and then add another item. Continue this around the circle, making sure everyone listens carefully.
Use music. Have students make their own simple percussion instruments and make one for yourself. Sit in a circle. Play a simple beat. Have students repeat this beat. Let students take turns playing a simple rhythm that other students follow.