Calm child.  Verify that it is permanent tooth not baby tooth.  Hold tooth by crown.  Don’t touch root.  If tooth is dirty rinse with saline, milk, or cold water for 10 seconds.  Do not scrub.  Replant tooth in socket.  Hold tooth in position. If cannot replant tooth put tooth in contact lens solution (saline) , spit or milk.  Do not place tooth in water.  See dentist immediately.