Helmi, Boby, and Juni Ardi Saragih. 2019. “Efforts to Improve Learning Outcomes Meroda In Floor Exercise Learning Through Teaching Style Command On High School Student Class XI GKPS 1 Simalungun Pematang Raya Academic Year 2015/2016: Efforts to Improve Learning Outcomes Meroda In Floor Exercise Learning Through Teaching Style Command On High School Student Class XI GKPS 1 Simalungun Pematang Raya Academic Year 2015/2016”. Journal of Midwifery and Nursing 2 (1):177-79. https://www.ejournal.iocscience.org/index.php/JMN/article/view/470.