Penerapan Strategi Pembelajaran Aktif Tipe Card Sort (Kartu Sortir) Untuk Men…

Research on the strategy of active learning with Card Sort type has been conducted to improve student achievement on the topic atomic structure and periodic systems of elements at class XI IPA SMAN 2 XIII Koto Kampar. This research is experimental research with randomized control group pretest-posttest design. The sample took in the 19 August – 04 September 2013. The sample consisted of two c…