-teachstudentsinaccordancewiththeiraptitude;educatesomeoneaccordingtohisnaturalability;modifyone'swayofteachingtosuitthespecialrequirementsofeachclassorcase;suittheteachingtotheabilityofthepupils;teachapersonaccordingtowhatheisgoodfor;teacheachmanaccordingtohismerits;usesuchteachingmethodsasarebestadaptedtothestudents