Bernadeta Ritawati
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KEMAMPUAN KOMUNIKASI MATEMATIKA: STUDI KOMPARASI PEMBELAJARAN NUMBER HEAD TOGETHER (NHT) DAN MEDIA POWER POINT (PPT) Bernadeta Ritawati; Wahyuni, Sri
Jurnal Pemikiran dan Penelitian Pendidikan Matematika (JP3M) Vol 3 No 1 (2020): Edisi Mei
Publisher : Pusat Penelitian dan Pengembangan Reka Karya Amerta (REKARTA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.949 KB) | DOI: 10.36765/jp3m.v3i1.216

Abstract

Abstrak: Penelitian ini bertujuan untuk mengetahui perbandingan kemampuan komunikasi matematika siswa dengan model pembelajaran kooperatif tipe NHT dan PPT di kelas VII SMP Negeri 02 Ngabang. Populasi dalam penelitian ini adalah seluruh siswa kelas VII SMP Negeri 02 Ngabang yang terdiri dari 3 kelas. Sampel dalam penelitian ini diambil dengan teknik Cluster Random Sampling. Kelas VIIA sebagai kelas eksperimen I dengan 24 siswa dan kelas VIIB sebagai kelas kelas eksperimen II dengan 24 siswa. Instrumen yang digunakan yaitu pretest dan posttest dalam bentuk uraian. Analisis data menggunakan uji t dengan taraf signifikansi 5 %. Hasil penelitian menunjukkan rata-rata posttest kelas NHT adalah 72,5 dan rata-rata posttest kelas PPT adalah 66,666. Hasil uji hipotesis posttest diperoleh  ( ). Karena  maka  ditolak dan  diterima. Hal ini berarti kemampuan komunikasi matematika siswa yang diajarkan dengan model pembelajaran NHT lebih baik dibandingkan dengan menggunakan media Power point. Abstract: This research is a quasi-experimental study that aims to determine the comparison of students' mathematical communication abilities with the cooperative learning model of the NHT and PPT media in class VII SMP Negeri 02 Ngabang. The population in this study were all students of class VII SMP 02 Ngabang consisting of 3 classes. The sample in this study was taken by using the Random Sampling Cluster technique. Class VII A as class I experimental class with 24 students and class VII B as a experimental class II with 24 students. The instruments used were pretest and posttest in the form of description. Data analysis uses the t test with a significance level of 5%. The results showed the average posttest for the NHT class was 72.5 and the average posttest for the PP class was 66.666. From the posttest hypothesis test results obtained t hitung> t tabel (1.9522> 1,667). Because t_hitung> t_tabel, H_0 is rejected and H_a is accepted. This means that students' mathematical communication skills taught with the NHT are better than using Power point media.
Upaya Menumbuhkan Rasa Ingin Tahu Siswa Mengenai Konsep Matematika Menggunakan Abakus Junaidi Junaidi; Mohammad Rif'at; Bernadeta Ritawati
JURNAL PENDIDIKAN DASAR Vol 3, No 1 (2015): Juni 2015
Publisher : STKIP Melawi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.591 KB) | DOI: 10.46368/jpd.v3i1.41

Abstract

Abstract: This study aimed to grow the students curiosity toward the concept of learning by using media abacus. The problems in this research were the student curiosity in understanding the concept of learning need to be grown, students number counting skill need to be improved, limitations of the learning media owned by the students, the need to foster student understanding toward mathematical concepts, teachers were still rarely use the media in the learning process, difficulty getting instructional media for this so necessary concrete objects as learning media of students. Researcher tried to address these problems by presenting a concrete learning media through the utilization of the natural resources around which " rubber seed ", the rubber seeds made into a media abacus. The results of this study were the result of increasing the learning process is shown by the results of the growth of the curiosity of students to the concept with an average of the first siclus 70,44. The result test of the first cycle 65,27 and the result test of the two siclus 83,05. Based learning environment that has a major contribution to the curiosity of students to the concept of the two siclus 81,73. Therefore, researcher suggest the teachers to use the media in any learning environment.Keywords: curiosity, understanding concepts, learning using abacus media.Abstrak: Penelitian ini bertujuan untuk menumbuhkan rasa ingin tahu siswa terhadap konsep pembelajaran dengan menggunakan media abakus. Permasalahan dalam penelitian ini adalah siswa masih harus ditumbuhkan rasa keingintahuannya dalam memahami suatu konsep pembelajaran, siswa masih harus ditingkatkan keterampilannya dalam berhitung, keterbatasan media hitung yang dimiliki oleh siswa, perlunya menumbuhkan pemahaman konsep pembelajaran matematika pada siswa, guru masih jarang menggunakan media dalam penyampaian materi, kesulitan mendapatkan media pembelajaran selama ini sehingga diperlukan benda-benda konkrit sebagai media pembelajaran siswa. Peneliti berupaya mengatasi permasalahan-permasalahan tersebut dengan menghadirkan sebuah media pembelajaran konkrit melalui pemanfaatan potensi sumber daya alam sekitar yaitu biji karet, biji karet tersebut dibuat menjadi media abakus. Hasil penelitian ini adalah meningkatnya hasil proses pembelajaran yang ditunjukan dengan hasil pertumbuhan nilai rata-rata rasa ingin tahu siswa terhadap konsep dengan rata-rata siklus I yaitu 70,44 dan perolehan siklus II yaitu 81,73,sedangkan perolehan rata-rata hasil belajar siklus I adalah 65,27 dan perolehan rata-rata hasil belajar siklus II adalah 83,05. Sehingga penggunaan media abakus dengan pemanfaatan potensi lingkungan sekitar memberikan kontribusi yang besar terhadap proses pembelajaran. Oleh karena itu peneliti menyarankan agar guru memanfaatkan media lingkungan sekitar dalam setiap pembelajaran.Kata kunci: rasa ingin tahu, pemahaman konsep, pembelajaran menggunakan media abakus.
Meningkatkan Hasil Belajar Siswa Pada Pembelajaran Matematika Dengan Menerapkan Teori Belajar Bruner Bernadeta Ritawati
Riemann: Research of Mathematics and Mathematics Education Vol 1, No 1 (2019)
Publisher : PROGRAM STUDI PENDIDIKAN MATEMATIKA STKIP PAMANE TALINO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.229 KB) | DOI: 10.38114/riemann.v1i1.17

Abstract

This study aims to improve students' learning outcomes in learning mathematics by applying Bruner's theory. This research is a classroom action research. The study was conducted at SMPN 2 Ngabang. The subjects were seventh grades students in semester II 2018/2019 academic year which consists of 41 students. The object of this research is mathematics learning. This study concludes that: 1) The process of learning mathematics is boring which makes students bored because the methods, media and models that the teacher uses cannot attract students' interest and attention so students can't be focused and passive in interacting with the teacher. 2) Learning mathematics is essentially learning about the relationship between concepts in mathematical material, thus making students easy to understand the subject materials. 3) Activities that students do in 3 stages; active, iconic, and symbolic make students active. 4) With activities, students can easily find out the answers of what, how, and why in a case, especially students can understand about the material which is being studied easily. Keywords: Bruner's theory, mathematics, learning outcomes