Hadijah M. Implementation Of Direct Learning Model In Group To Improve Mathematics Achievement In Fifth Grade Students At Sdn 06 Perawang Barat In Academic Year 2012/2013. JIPS [Internet]. 2018 Oct. 28 [cited 2024 Dec. 22];1(3):71-8. Available from: https://e-journal.sastra-unes.com/index.php/JIPS/article/view/148