Riana Irawati

Bio: Riana Irawati is an academic researcher. The author has contributed to research in topics: Mathematical ability. The author has an hindex of 1, co-authored 2 publications receiving 3 citations.

Pengaruh pendekatan kontekstual berstrategi relating, experiencing, applying, cooperating, transferring (react) terhadap kemampuan representasi matematis siswa

Abstract: Kemampuan representasi matematis merupakan kemampuan yang masih rendah. Kemampuan ini dapat dikembangkan melalui pembelajaran yang inovatif. Salahsatu pembelajaran yang mampu meningkatkan kemampuan representasi matematis siswa adalah pendekatan kontekstual berstrategi relating, experiencing, applying, cooperating, transferring (REACT). Metode dalam penelitian ini yaitu metode eksperimen dengan desain nonequivalent control group design . Populasi dalam penelitian ini yaitu siswa kelas IV SD se-Kecamatan Cisalak Kabupaten Subang yang sekolahnya berada pada kelompok sedang. Sementara, sampelnya adalah siswa kelas IV SDN Cigadog II sebagai kelas eksperimen dan SDN Cisalak III sebagai kelas kontrol. Instrumen yang digunakan berupa soal tes kemampuan representasi matematis, skala sikap, lembar observasi kinerja guru, lembar observasi aktivitas siswa, dan wawancara dengan siswa. Hasil penelitian dengan taraf signifikansi α = 0,05 menunjukkan bahwa pembelajaran dengan pendekatan kontekstual berstrategi REACT lebih baik secara signifikan daripada pembelajaran konvensional dalam meningkatkan kemampuan representasi matematis siswa. Selain itu, respon siswa terhadap pembelajaran kontekstual berstrategi REACT sangat positif.

PENGARUHi MODELv KOOPERATIFn TIPEy NUMBnERED HEADSt TOGETHER (iNHT) TERHADAlP KEMAMlPUAN KOMUNIKASIi lMATEMATIS DAN KEPERCAYAAN DIRI SISiWA SEKOLAH DASAR

Abstract: The importance of mathematical communication ability and confidence of students in learning is the background of this research. Therefore, this research will implement a icooperative modell iof type Numbered Heads Together (NHT) iin lthe llearning process. That is because of the model of cooperative deals with mathematical communication skills and self-confidence of students. As for the purpose of research, namely thei applicatiion oft the cooperatiive modell oif type iNumbered Headsf Togetherx (NHTo) as an attempt to improve the mathematical communication skills and confidence elementary school students. This includes research into the types of research design experimental non-quasi equgivalent coentrol groupl. Thze vpopulation hin thisb study are gradel IV elementary school District. Lemahabang Kab. Cirebon. While the research sample is SDN Cipeujeuh Kulon 1 as class experiments and SDN Cipeujeuh Kulon 2 as the class of the control. The instruments used are a matter pre test and post test, now the confidence of the students, teachers, performance observation guidelines and the guidelines for the observation of activity of students. The results showed that the existence of a significant difference in mathematical ability improvement and confidence of students both in the classroom experiments as well as the class of the control. It is proved by the results of test calculations of average difference values of gain using a test-T sample of mathematical communication ability for free and test-U for the confidence of students. On mathematical communication skills acquired P-value (Sig 1-tailed) of 0.009, while confidence is obtained P-value (Sig 1-tailed) by 0.0043. It can be concluded that increased the ability of mathematical communication and self-confidence of students who follow learning model cooperative type NHT more significant compared to students who follow the conventional learning.

Interaksi pbl-murder, minat penjurusan, dan kemampuan dasar matematis terhadap pencapaian kemampuan berpikir dan disposisi kritis

Abstract: Selection of appropriate learning approaches and strategies, will facilitate the achievement of these learning activities. Similarly, in mathematics learning activities in PGSD (department of elementary school preservice teacher), which is demanding the development of a high level of mathematical ability as well as critical thinking skills. However, not many people are trying to look for other factors in addition to the approach/learning strategy, which is possible to contribute to the development of critical thinking skills, such as interest factor majors students (IPA [science] and non-IPA [non-science]) as well as mathematical prior knowledge which has been owned previously. In addition, affective aspects that accompany any critical thinking skills (critical disposition) is a study that is still rare. This paper briefly present to peel the election factor of approaches and learning strategies, ie, problem based learning with "MURDER" strategy, shared interests and their interaction majors and mathematical prior knowledge of the result of performance of critical thinking skills and dispositions of PGSD students. Keywords : problem-based learning, the "MURDER" strategy, mathematical prior knowledge, critical thinking skills, critical thinking disposition.

Penerapan Model Pembelajaran Relating, Experiencing, Applying, Cooperating, Transferring (REACT) untuk Meningkatkan Pemahaman Konsep Fisika SMA

Abstract: The aims of this study was to test the effectiveness of the Relating, Experiencing, Applying, Cooperating, Transferring (REACT) learning model in improving students' understanding of physics concepts. This research used Action Research with the research subjects of class X MIPA 4 SMA N 2 Batang. Data collection techniques using tests. The results of the research in cycle I showed the number of students who got a score of ≥ 60 was 4 students and cycle II was 14 students. These results indicate that the REACT learning model can improve students' understanding of physics concepts. The learning process that is carried out is always connected with events that occur in real life so that students understand the concept more deeply. The REACT learning model can be applied to other physics materials so that students are more actively involved in learning and improve students' understanding of physics concepts.