First, briefly explain the forces involved in flying:

• Thrust : The engines push the airplane forward
• Drag : The resistance of the air which slows the plane down
• Gravity:  The weight of the aircraft pulls it toward the ground
• Lift: Air flowing over the wings moves the aircraft upward

Have the Cubs stand in a line facing the leader. The leader shouts out one of the four forces of flight. The Cubs must do the action for the force as follows:

• Thrust: Run foward
• Drag: Run backward
• Gravity: Fall down
• Lift: Jump