Abstract: Problem statement: In the context of science education reform in Thailand, we need to
prepare science teachers who can face science and social issues controversial; teachers can response
the question socioscientific issues and let their students to meet the goal of science education. This
study investigated the conception leading preservice science teachers approaching socioscientific
issues-based teaching. The activities in classroom emphasized on peer discussion about science and
social reflection, nature of science, making decision based on moral and ethics was employed.
Approach: The purpose of this study was to develop preservice science teachers which promote the
introduction of socioscientific issues in the classroom. One hundred and one preservice science
teachers were asked about conception of socioscientific issues-based teaching. Based on reality of
pedagogical aspect, they need to know nature of science and conception about how to incorporate
science and social issues into classroom. Result: Most of them showed their beliefs for socioscientific
issues-based teaching in terms of ways to promote nature of science. The ideas for teaching need
awareness of science and society, scientific values, personal experiences, moral and ethics in science
and social judgment. Also, this study showed that preservice science teacher express their satisfaction
on the activities at high level. Conclusion/recommendations: The results recommend the
socioscientific issues-based teaching for curriculum development and program for gaining preservice
teachers to aware their role in science classroom.