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Achi Rinaldi

UIN Raden Intan Lampung

Author-ID : 2539361

Religion Arts Humanities Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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MODEL PEMBELAJARAN HYPOTHETICAL LEARNING TRAJECTORY: DAMPAK KEMAMPUAN REPRESENTASI MATEMATIS BERBASIS GENDER Kiki Ambar Sari; Achi Rinaldi; Siska Andriani
AdMathEdu : Jurnal Ilmiah Pendidikan Matematika, Ilmu Matematika dan Matematika Terapan Vol 11, No 1: Juni 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/admathedu.v11i1.19874

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran HLT (Hypothetical Learning Trajectory) terhadap kemampuan representasi matematis ditinjau dari perbedaan gender. Metode yang digunakan dalam penelitian ini adalah Quasy Experimental Design. Populasi penelitian ini adalah seluruh peserta didik kelas VII SMPN 3 Tumijajar Tulang Bawang Barat. Teknik pengambilan sampel dilakukan dengan teknik acak kelas, sehingga kelas VII E sebagai kelas eksperimen dan kelas VII D sebagai kelas kontrol. Hasil penelitian dan pembahasan perhitungan uji anava dua jalan dengan sel tak sama, diperoleh hasil bahwa terdapat pengaruh model pembelajaran HLT dan model pembelajaran konvensional terhadap representasi matematis peserta didik. Berdasarkan perhitungan analisis data terlihat bahwa tidak terdapat perbedaan kemampuan representasi matematis peserta didik ditinjau dari gender. Berdasarkan perhitungan analisis data terlihat bahwa tidak terdapat intaraksi antara model pembelajaran dan perbedaan gender terhadap kemampuan representasi matematis peserta didik.

Mathematical problem-solving abilities and reflective thinking abilities: The impact of the influence of eliciting activities models Suci Hartati; Ratu Ayu Bilqis; Achi Rinaldi
Al-Jabar: Jurnal Pendidikan Matematika Vol 11, No 1 (2020): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

This study aims to determine the effect of the Model Eliciting Activities (MEAs) learning model to the mathematical problem-solving abilities and the mathematical reflective thinking skills. This research is a type of Quasi Experimental Design research. Data collection techniques in this study in the form of documentation and tests at the public school in Bandar Lampung with 30 students of experiment classes and 30 students of control classes. Data analysis techniques used are the normality and homogeneity test. Testing hypothesis in this study using the Multivariate Analysis of Variance (MANOVA) test. Based on the result of this study, the calculation of the MANOVA test, it was concluded that there was an influence of the Model Eliciting Activities (MEAs) to the mathematical problem-solving abilities and the mathematical reflective thinking skills. The application of the Model Eliciting Activities to the mathematical problem-solving abilities and the mathematical reflective thinking skills has a relatively high level of effectiveness.

ANALISIS VALIDITAS RELIABILITAS TINGKAT KESUKARAN DAN DAYA BEDA PADA BUTIR SOAL UJIAN AKHIR SEMESTER GANJIL MATA PELAJARAN MATEMATIKA KELAS XII IPS DI SMA NEGERI 12 BANDAR LAMPUNG TAHUN AJARAN 2014/2015 Hery Susanto; Achi Rinaldi; Novalia Novalia
Al-Jabar: Jurnal Pendidikan Matematika Vol 6, No 2 (2015): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

This study aims to(1) determinethe items quality of odd semesterfinal examin social class XII mathematics subject academic year 2014/2015 in terms of validity, reliability, level of difficulty, and distinguishing power, (2) createa program shape for calculating validity, reliability, level of difficulty and distinguishing power. The researchused quantitative descriptive method and documentation technique. The datas consisted of 128 students’ answer sheetsin social class XII academic year 2014/2015. The datas were analyzed by using several formulas of validity, reliability, level of difficulty, distinguishing powerand the use of IBM SPSS Statistics22 software and anates V4 software. The results showed that 22 questions (55%) were valid and 18 questions (45%) were invalid. The reliability of items was quite good where the reliability coefficient value more than rtabel was 0.558 based on three formulas which were Anova Hoyt, Cronbach alpha and IBM SPSS Statistics 22. The difficulty level of items was not good because the items balances including easy, medium and difficult were not proportional, the proportional balance was 3-5-2 or 3-4-3. The distinguishing power of items showed that 1 item (2.50%) was very good, 9 items (22.50%) were good, 10 items (25%) were moderate, 14 items (35%) were less good and 6 items (15%) were bad. In addition to the above results, this study also resulted a program shape to facilitate the calculation of item analysis. The program calculations are the validity index analysis, reliability, level of difficulty and distinguishing power of test instrument.

Sebaran Generalized Extreme Value (GEV) Dan Generalized Pareto (GP) untuk Pendugaan Curah Hujan Ekstrim di Wilayah DKI Jakarta Achi Rinaldi
Al-Jabar: Jurnal Pendidikan Matematika Vol 7, No 1 (2016): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Extreme event such as extreme rainfall have been analyzed and most concern for the country all around the world. There are two common distribution for extreme value which are Generalized Extreme Value distribution and Generalized Pareto distribution. These two distribution have shown good performace to estimate the parameter of extreme value. This research was aim to estimate parameter of extreme value using GEV distribution and GP distribution, and also to characterized effect of extreme event such as flood. The rainfall data was taken from BMKG for 5 location in DKI Jakarta. Both of distribution shown a good perfromance. The resut showed that Tanjung Priok station has biggest location parameter for GEV and also the biggest scale parameter for GP, that mean the biggest probability to take flood effect of the extreme rainfall.

Aplikasi Model Persamaan Struktural pada Program R (Studi Kasus Data Pengukuran Kecerdasan) Achi Rinaldi
Al-Jabar: Jurnal Pendidikan Matematika Vol 6, No 1 (2015): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Structural Equation Model (SEM) was known as powerfull and popular multivariate analysis technique. It provides a comprehensive method for the quantification and testing of theories. The ability of this model is to test model with multiple dependent that more powerfull than multiple regression, it’s also can make some simultaneously model in one form. Data was used from Holzinger and Swineford that measured intellegence in several indicator. This model was lack of form and performance that can be showed in value of Chi-square. Akaike Information Criterion (AIC) and Chi-square value for specificly in block “male” was less than “female”, so the result gave structural model for block male was better than female.

Pengaruh Pembelajaran Berbatuan Geogebra terhadap Pemahaman Konsep Matematis ditinjau dari Gaya Kognitif Ramadhani Dewi Purwanti; Dona Dinda Pratiwi; Achi Rinaldi
Al-Jabar: Jurnal Pendidikan Matematika Vol 7, No 1 (2016): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

The purpose of this research is to know whether there is influence of learning model of Geogebra-assisted Discovery Learning to understanding mathematical concept, to know whether there is influence between learners who have cognitive style of FI and FD to understanding mathematical concept, to know whether there is interaction between learning of Discovery Learning Unity Geogebra with the cognitive style of learners towards the understanding of mathematical concepts. This research type is quasi experiment research, population in this research is all students of class VII of SMP Negeri 2 Bandar Lampung, sampling technique in this research use class random technique where class VII-8 as experiment class 1 with study of Discovery Learning assisted geogebra, Class VII-7 as a control class with Discovery Learning learning with Microsoft Power Point. Technique of data analysis in this research use two way Anova test with unequal cell. Based on the test results, the first hypothesis is indicated by the statistical price of 8,871, so that H0A is rejected with the conclusion that there is influence of Discovery Learning learning by geogebra toward the understanding of mathematical concept. For the second second hypothesis is shown with a statistical price of 5.23 , so H0B is rejected with the conclusion that there is an influence between learners who have cognitive style of FI and FD on the understanding of mathematical concepts. For the third hypothesis, it is shown by the statistical price of 1.05, so H0AB is accepted with no conclusion there is no interaction between the learning of Geogebra-assisted Discovery Learning with the cognitive style of learners towards the understanding of mathematical concepts.

Understanding of Mathematical Concepts in the Linear Equation with Two Variables: Impact of E-Learning and Blended Learning Using Google Classroom Syamsul Huda; Mu'min Firmansyah; Achi Rinaldi; Suherman Suherman; Iip Sugiharta; Dian Widi Astuti; Okis Fatimah; Andika Eko Prasetiyo
Al-Jabar: Jurnal Pendidikan Matematika Vol 10, No 2 (2019): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Students need an understanding of mathematical concepts provided by educators who have good skills. Educators must also maximize their teaching time so that it requires learning models such as e-learning and blended learning to meet the loss of teaching time due to other activities that must be done by the teacher besides teaching. This study aims to see the impact of blended learning and e-learning on the ability to understand mathematical concepts of students in the material of two-variable linear equations. The method used in this study is the quasi-experiment with the posttest only control design research. Technical analysis uses one way ANOVA. Based on the results of the study, Blended Learning and E-Learning influence understanding mathematical concepts in the two-variable linear equation material, so that it can be used as a knowledge given to students in understanding mathematical concepts.

The Effect of Hypnoteaching Learning Method on Students’ Problem-Solving Skills and Concept Understanding Fitria Adelita; Achi Rinaldi; Fredi Ganda Putra
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 5 No. 1 (2021)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v5i1.1391

The purpose of this study is to know the impact of the method (hypnoteaching) on problem solving and conceptual comprehension of learners. This research represents the kind of research quasy experimental design. The sampling technique used is a random sampling cluster. The population in this study is the entire class vii MTS sa raudlatul huda al-islamy. The samples in this study are vii classes and vii class. the tools used are the test of problem solving and concept understanding. The multivariate analysis of variant (manova) with its degree of significance: 0.05, and concluding (1) is influenced by methods (hypnoteaching) on the faculty's problem-solving ability (2) there is the influence of the method (hypnoteaching) on the ability of discerning the learner's concept (3) on the influence of the method (hypnoteaching) on the problem solving and comprehension of learners.

Analisis Kemampuan Berpikir Kreatif Matematis: Dampak Model Open Ended dan Adversity Quotient (AQ) Komarudin Komarudin; Yulia Monica; Achi Rinaldi; Novia Dwi Rahmawati; Mutia Mutia
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 10, No 2 (2021)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Open Ended terhadap kemampuan berpikir kreatif matematis siswa, ditinjau dari Adversity Quotient (AQ). Populasi pada penelitian ini adalah seluruh siswa kelas XI SMA Gajah Mada Bandar Lampung. Sampel pada penelitian ini adalah siswa kelas XI IPA 1 sebagai kelas eksperimen, dan siswa kelas XI IPA 2 sebagai kelas kontrol. Jenis penelitian yang digunakan adalah Quasy Experimental Design dengan teknik pengambilan sampel Cluster Random Sampling. Teknik pengambilan data yang digunakan pada penelitian ini adalah tes dan angket. Tes berupa soal uraian untuk mengukur kemampuan berpikir kreatif matematis, dan angket untuk mengukur skor AQ. Angket yang digunakan adalah Adversity Response Profile (ARP). Uji hipotesis menggunakan uji anava dua jalan (Two Way Analysis Of Variance) dengan taraf signifikansi 0,05. Hasil yang diperoleh dari penelitian ini adalah terdapat pengaruh model pembelajaran terhadap kemampuan berpikir kreatif matematis siswa, tidak terdapat pengaruh tipe AQ terhadap kemampuan berpikir kreatif matematis siswa, dan tidak terdapat interaksi antara model pembelajaran dengan AQ terhadap kemampuan berpikir kreatif matematis siswa.

Aplikasi Program Linear: Media Pembelajaran Berbasis Android Menggunakan MIT App Inventor Syarifah Sri Rahayu; Achi Rinaldi; Wawan Gunawan
JKPM (Jurnal Kajian Pendidikan Matematika) Vol 7, No 1 (2021): JKPM (Jurnal Kajian Pendidikan Matematika)
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/jkpm.v7i1.11442

Media pembelajaran menjadi suatu hal yang pokok dalam menetapkan kualitas pembelajaran. Model pengembangan perlu diperhatikan untuk mendesain suatu media pembelajaran guna memastikan kevalidan serta kualitasnya untuk membantu kelancaran pembelajaran. Aplikasi program linear berbantuan MIT App Inventor bertujuan agar dapat dikembangkan menjadi media pembelajaran yang layak serta menarik untuk digunakan. Desain pengembangan yang digunakan pada metode penelitian R&D (Research and Development) ini adalah ADDIE yang disederhanakan menjadi ADD. Subjek uji coba pada penelitian ini diujikan kepada 2 validator ahli media, 3 validator ahli materi, uji coba perorangan, uji kelompok kecil, uji coba lapangan. Berdasarkan hasil analisis data bahwa media pembelajaran aplikasi program linear dinyatakan valid dan layak digunakan dengan perolehan hasil validator ahli media 3,56 dan validator ahli materi 3,86. Skor rata-rata dalam kategori sangat menarik pada uji coba perorangan sebesar 3,50, uji coba kelompok kecil 3,55, dan 3,58 untuk uji coba lapangan.

Co-Authors Abi Fadila Agus Pahrudin Ahmad Fauzan Ahmad Sodiq Andika Eko Prasetiyo Arfani Manda Tama Budi Santoso Deden Makbuloh Desi Vitona Dian Anggraini Dian Widi Astuti Diana Yonika Sari Dinda Permata Sari Dona Dinda Pratiwi Donald Harris Sihotang Elsa Widya Asri Fitria Adelita Fredi Ganda Putra Gusti Ayu Farah Nabilla Hadi Nasbey Hery Susanto Iip Sugiharta Ikram Mawar Sari Ima Damayanti Kenny Candra Pradana Kenny Candra Pradana Kiki Ambar Sari KOMARUDIN Lusi Anggraini Mu'min Firmansyah Muhamad Syazali, Muhamad Muhammad Akmansyah Mutia Mutia Nanang Supriadi Novalia Novalia Novia Dwi Rahmawati Novitasari Supardi Nurhasanah Leni Nurjanah Nurjanah Nurrasiah, Nurrasiah Okis Fatimah Pranata, Meli R. Suyanto Ramadhani Dewi Purwanti Rany Widyastuti Rany Widyastuti Ratu Ayu Bilqis Rekasepti Anggraini Reni Novilia Riska Fitriana Riyanto Adi Kusumah Riyanto Rizka Putri Rizki Wahyu Yunian Putra Roby Firdian Ruswanda Rosida Rakhmawati Safitri, Julia Dwi Sakti Aktarim Sekar Handayani Siska Andriani Siti Mardiah Siti Mardiah, Siti Siti Patimah Suci M.Hum SH Hartati Suherman Suherman Suherman, Suherman Syamsul Huda Syarifah Sri Rahayu Tama, Arfani Manda Ulfa Iqoh Wahyu Kusumaningtyas Wawan Gunawan Yasinta Rahmawati Yulia Monica Yulistia Devi Yulistiana Yulistiana Yuni Susianto

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