What is forward slip in aviation?
It is a technique you use to lose altitude quickly without gaining airspeed.  It is not efficient aerodynamically as it causes significant drag.  The plane will appear as if it is flying sideways.  A forward slip is executed by applying aileron input with opposite rudder.  Typically full opposite rudder is needed to compensate for the aileron input.
What is forward slip in aviation?
It is a technique you use to lose altitude quickly without gaining airspeed.  It is not efficient aerodynamically as it causes significant drag.  The plane will appear as if it is flying sideways.  A forward slip is executed by applying aileron input with opposite rudder.  Typically full opposite rudder is needed to compensate for the aileron input.