Developing Standards Skill According to the Learning Curves

Inclusion Criteria: * Nursing and midwifery students in Mashhad. * Before the relevant skills in teaching nursing for the theoretical and practical training * Employment as student work , etc., is not nursing . Exclusion Criteria: * Skills into the clinical environment is not done , or a maximum of three times ( contact skills intravenous line , dry dressing , intramuscular injection ) has done . Defects or diseases that cause skills to do independent problem , no . ( At the discretion of the instructor ) No sign student proficiency , skills required in this section or elsewhere has done . Student of psychological ( lack of acute stress , etc.) is ready to perform skills . ( At the discretion of the instructor )