It is believed that men are different from women in communicating their ideas and feelings through the communication system called language. This article divulges how gender factor influences EFL instructors’ instructional talks in Indonesian context. It goes over findings of a case study undertaken at two colleges in Makassar, South Sulawesi. In the study, four EFL instructors (two male and two female) of the colleges were purposively chosen as the subjects, and the data leading to the findings were obtained through classroom observation. The findings reveal that the male instructors’ instructional talks are quite stiff and typically stimulate instructor-centered atmosphere, while the female instructors’ are more genial and naturally stimulate instructor-students harmonious interactive communications. Thus, it can be inferred that while the male instructors tend to be ‘commanders’ in front of the class, the female set themselves as amicable “mothers” to the students.

Chemistry learning in vocational schools is included in the field of specialization, but the context of chemistry learning is in vocational schools has not been linked to the vocational field. Therefore it is necessary to research to compile chemical teaching materials vocational schools that integrate the vocational context. In addition to teaching materials related to the vocational context, this study also aims to integrate character education and religious aspects (chemireligiousa). This teaching material development model adopts the 4D model by Borg & Gall. The preparation of teaching materials is based on a literature study and rational considerations to find the characteristics of learning planning in the form of teaching materials and worksheet, as well as an assessment to measure HOTS. The validation of teaching materials in terms of aspects of chemical content material, vocational context material, as well as the suitability of the chemical content with the vocational context. The results obtained by validated acid-base teaching materials are related to aspects of the vocational context and religious aspects. The results of this study have been able to develop teaching materials so that they fit the vocational context. It is necessary to do an in-depth basic competence (BC) analysis of Chemical in general and vocational so that it can be applied to contextual vocational chemical.