Penelitian ini dilatarbelakangi oleh kualifikasi kemampuan komunikasi matematis siswa yang dianggap perlu untuk mencapai kualifikais tinggi karena kemampuan komunikasi merupakan salah satu standar kemampuan matematis yang harus dikuasai oleh siswa. Penelitian ini menggunakan metode eksperimen dengan populasi seluruh siswa kelas VIII SMP Negeri 2 Gunung Jati tahun ajaran 2012/2013. Sampel dipilih berdasarkan purposive sampling. Berdasarkan teknik tersebut diperoleh sampel sebanyak dua kelas yaitu kelas VIIIF sebagai kelas eksperimen dan kelas VIIID sebagai kelas kontrol. Instrumen yang digunakan dalam penelitian ini berupa soal uraian untuk mengukur kemampuan komunikais matematis siswa. Peningkatan kemampuan komunikasi kelas eksperimen termasuk ke dalam kualifikasi tinggi sedangkan kelas kontrol berkualifikasi sedang. Sehingga diperoleh kesimpulan peningkatan kemampuan komunikasi matematis siswa yang mendapat pembelajaran kooperatif tipe teams-games-tournaments lebih baik daripada siswa yang mendapat pembelajaran konvensional.

The purpose of this research is to find out the correlation between understanding the geometry concept of mathematics pre-service teacher and teaching ability, in explaining the concept of geometry systematically in a planned order, so that the students are easier to understand. Geometry concepts include (1) visual skills, (2) descriptive skills, (3) drawing skills, (4) logical skills, and (5) applied skills. The research method is an experiment, and the sampling technique is purposive. The research instrument is a practice test. Data understanding of geometry concept comes from the Final Test of Geometry course, while the data of teaching ability comes from teaching practice score on geometry topic. The statistical test uses the Pearson Product Moment correlation test and linearity test. The results of this research are: (1) there is a significant correlation between students’ concept comprehension ability and geometry teaching ability; (2) the relationship between students’ conceptual understanding and geometry teaching ability is in the medium category; (3) the magnitude of the influence between the understanding of student concepts and geometry teaching ability is 46.5%. It indicates that there is another factor of 53.5% that affects the ability of pre-service teacher teaching on geometry topics in addition to student concept comprehension.

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AbstrakHampir sebagian besar orang tua siswa berada di sekolah untuk menemani anaknya belajar. Aktivitas mereka yang monoton, seperti mengantar dan menunggu anaknya belajar di TK, sungguh sesuatu yang perlu dipikirkan. Apalagi keberadaan mereka yang bergerombol dan tidak teratur, hanya diisi dengan mengobrol, jajan camilan, atau sesekali arisan kecil untuk menutup kebosanan. Kondisi ini, dapat diupayakan agar aktivitas menunggu itu bisa lebih bermanfaat dan bernilai tambah bagi mereka. Oleh karena itu, tim pengabdi merancang suatu pelatihan dan pendampingan dalam membuat beberapa kreasi yang sebelumnya belum pernah dilakukan. Kreasi tersebut berupa kerajinan rajut tangan yang dibentuk menjadi berbagai macam benda seperti gantungan kunci, konektor masker, bunga, dll. Kerajinan merajut dapat dilakukan kapan saja dan dimana saja. Tujuan kegiatan pengabdian ini untuk meningkatkan (1) aktivitas keterampilan rajut tangan, dan (2) pengetahuan access market orang tua siswa TK B Annur. Metode kegiatan pengabdian masyarakat dilaksanakan dengan ceramah, tanya jawab, dan simulasi.  Tahapan yang dilalui diantaranya observasi lapangan, sosialisasi, pra pelatihan, pelatihan, evaluasi dan kegiatan pendampingan. Melalui kegiatan PKM diharapkan orang tua siswa dapat mengembangkan potensinya secara optimal dan menguatkan perekonomian keluarga dengan wirausaha. AbstractMost of the students' parents are at school to accompany their children to study. Their monotonous activities, such as escorting and waiting for their children to study in kindergarten, are really something to think about. Especially when they are clustered and disorganized, only filled with chatting, snacking, or the occasional small social gathering to cover boredom. In this condition, efforts can be made so that the waiting activity can be more useful and have added value for them. Therefore, the service team designed a training and mentoring in making several creations that had never been done before. These creations are in the form of hand-knit crafts that are formed into various kinds of objects such as key chains, mask connectors, flowers, etc. Knitting crafts can be done anytime and anywhere. The purpose of this service activity is to improve (1) hand knitting skills activities, and (2) knowledge of access market parents of Kindergarten B Annur students. Methods of service community activities is carried out by lecturing, question and answer, and simulation. The stages taken included field observations, socialization, pre-training, training, evaluation and mentoring activities. Through community service activities, it is hoped that students' parents can develop their potential optimally and strengthen the family economy with entrepreneurship.

This study aims to determine differences in mathematical communication skills of students who get the Multy Reprecent discourse learning model and who get conventional learning on integer material in class VII SMP Negeri 2 Ciniru. This research is a type of quantitative research with experimental research methods. The research sample was selected using purposive sampling technique. Data collection instruments in the form of tests of mathematical communication skills. The data analysis technique consisted of analysis prerequisite testing techniques using normality and homogeneity tests, while the hypothesis testing technique used t test. The results showed that there were differences in mathematical abilities in integer material between students who obtained the Multy Reprecent Discourse learning model and students who received conventional learning.