Doing research and publication in the form of scientific article is not part of teachers' duties as an educator. Conducting research particularly class action research, however, is a necessity for teachers to solve some problems experienced in class. The needs to publish an article from research result emerges from the importance of sharing research result conducting in class. This research result may solve similar problems happened in other classes and experinced by other teachers. High school mathematics teachers in Kediri city encounter difficulties in transforming research result into a scientific article. This community service program provides a training and accompaniment in writing a scientific article. This program involves some activities, i.e. (1) elucidating the structure of scientific articles and its description, (2) giving examples of scientific articles from research results, (3) practicing in writing scientific article, and (4) presenting article results from practice section. This program is expected to encourage high school mathematics teachers in Kediri city to have a scientific article and to publish the article in seminars or scientific journals.

Solving a rational inequalities is difficult for mathematics students. Many of them make a mistake when solving such problem. This research aimed to investigate and categorize a first year mathematics undergraduate student error when solving rational inequalities problem. The data were obtained from 75 students taking the course introduction to algebra, through anlysis of students response to the items of the quiz. The result showed that many students had mistake of type errorrs in inequality rules. Most of them are solving the rational inequalities by treating it as a rational equation. This mistake happen because they misunderstand about the rule of inequality while they are performing multiplication. The other mistake is of type error in writing the solution. The students didn't use number line so that leads to incorrect solution set..

Fixed point theorems in complex-valued metric spaces have been extensively studied following the extension of the definition of a metric to a complex-valued metric. The definition of b-metric, which is considered as an extension of a metric, is also extended to complex-valued b-metric. This extension causes the study of existence and uniqueness of fixed point in complex-valued b-metric spaces. Fixed point theorems that have been studied in b-metric spaces are now of interest whether the theorems are still satisfied in complex-valued b-metric spaces. In this paper, we study the existence and uniqueness of fixed point in complex valued b-metric spaces. We consider some fixed point theorems in b-metric spaces to be extended to fixed point theorems in complex valued b-metric spaces. By using the definition of complex-valued b-metric spaces and the properties of partial order on complex numbers, we have obtained some fixed point theorems in complex-valued b-metric spaces which are derived from the corresponding theorems in b-metric spaces.

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