Saragih, M. ., Pasaribu, D. . and Perkas, J. (2022) “Improving Students’ Speaking Ability Trough Students Teams Achievement Devision ( STAD ) at The Second Grae Students of SMA Katolik Delimurni Delitua ”, Journal of Classroom Action Research , 1(2), pp. 43–49. doi: 10.52622/jcar.v1i2.96.