Improving Speaking Ability On Argumentation Through Group Discussiontechnique

This research is intended to answer the problem about how does group discussion technique improve speaking ability on argumentation in terms of assertion, reason and evidence to the eleventh grade students of SMA Negeri 01 Tumbang Titi. In this research, the writer used classroom action research.The tools of data collection used oral test, field note and observation checklist. On the first cycle, the writer explained about assertion, reason, and evidence in argumentation and gave the students a hand out about expressing argumentation. In making assertion the writer used picture and trigger question to the students and the students mean score was 38.12. In the second cycle, the writer asked the students to search some examples of the logical reason in magazine, newspaper, and internet and the students mean score was 52.10. The writer also asked the students to make evidence from newspaper, magazine, internet etc in the third cycle, and the students mean score was 65.79. The writer found that students speaking ability on argumentation had improved through group discussion technique