Demonstrate how to get into the starting position with legs apart and hands out with palms facing upward. The passer should play the ball low and your knees should be flexed and ready to get under the ball. When making contact you should move laterally to the ball and make contact with the ball with your forearms. Students should be a least 7-10 feet away when passing the ball. Each student gets two hits in a row - a bump to oneself, then a bump back to the other student.
Students bump to self, make a quarter turn, then bump to student.
Bump to self, make a half turn and bump to student. Bump to self, make a full turn and bump to student. Include more variations like students get three hits in succession and than pass. Have one student in the middle and have all the students bump the ball to the person in the middle. After the person has hit the ball several time you rotate.