Abstract
This research aims to: (1) investigate the quality of the existing speaking materials used at SMA ABBS Surakarta, and (2) develop supplementary speaking materials for SMA ABBS Surakarta by using collaborative learning.
This is a Research and Development study which consists of two main stages namely exploration stage and development stage. The exploration stage includes document and need analysis. Meanwhile, the development stage deals with developing the prototype, consulting two experts to validate the prototype, and trying it out. In order to get the data, the researcher conducted observation, interview, and FGD and distributed questionnaires as well.
The data gained show that there are several weaknesses which reveal that the quality of the existing speaking materials needs to be improved. Due to the weaknesses found, the researcher developed the prototype by using collaborative learning and also considering the result of need analysis and speaking indicators. The prototype is also framed by the syllabus the school uses and was handed to the experts to get their validation. It then came to a series of try-out which was followed by distributing questionnaires and conducting focus group discussion to pursue its feasibility. The result of try-out 1 got the researcher to revise one confusing picture and insert some audio materials and games. Meanwhile, the result of try-out 2 revealed no improvement toward the prototype which was then stated feasible.

Keywords: speaking, collaborative learning, supplementary materials