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Nanang Supriadi
Universitas Islam Negeri Raden Intan Lampung
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The Utilization of Project Based Learning and Guided Discovery Learning: Effective Methods to Improve Students’ Mathematics Ability Supriadi, Nanang; Syazali, Muhamad; Lestari, Bella Dwi; Dewi, Eva Sima; Utami, Lintang Fitra; Mardani, Lingga Afriansyah; Putra, Fredi Ganda
AT-TA'LIM Vol 25, No 3 (2018)
Publisher : Institut Agama Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (17.657 KB) | DOI: 10.15548/jt.v25i3.487

Abstract

The purpose of this study was to determine whether there is any difference between students’ mathematical representation ability who were taught by using the learning model of Project Based Learning with students who were taught by Guided Discovery Learning; there is any difference in the students' mathematical representation ability based on high, medium, or low learning motivation categories, and there is an interaction between the learning model and the learning motivation toward mathematical representation ability. A quasi experiment was used with 2x3 factorial designs. Instrument used to collect data was mathematics test and learning motivation questionnaire. The hypothesis testing used two way analysis of variance with unequal cell. Based on the results of hypothesis testing, it can be concluded that there is a difference in the students' mathematics ability that was taught by using Project Based Learning model with students who were taught by sing Guided Discovery Learning model; there is a difference in the students’mathematical representation ability based on high, medium, or low learning motivation; and there is an interaction between the learning model and the learning motivation on the mathematics ability.
SUPPRESSING ANXIETY AND IMPROVING ACHIEVEMENT: THE ROLE OF THE ADLX INTROFLEX INTEGRATED MODEL IN MATHEMATICS LEARNING Syifa Salsabila, Naura; Supriadi, Nanang; Resti Ayuni Suri, Indah
EMTEKA: Jurnal Pendidikan Matematika Vol. 7 No. 1 (2026)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/emteka.v7i1.11273

Abstract

Mathematics anxiety is a psychological obstacle that consistently decreases students' motivation and learning achievement, especially at the junior high school level. This study aims to analyze the influence of the Integrated ADLX Introflex model on mathematics learning outcomes and mathematical anxiety of junior high school students in Bandar Lampung. The study used a quantitative approach with a Quasi-Experimental Pretest-Posttest Control Group design, involving 79 students in grade VIII divided into 38 students in the experimental class and 41 students in the control class. The instruments used included a learning achievement test (α = 0.87) and a mathematical anxiety questionnaire (α = 0.89). The data were analyzed using MANOVA after the assumption of normality and homogeneity was met. Partial test results showed F = 56.907 (η² = 0.428) for learning achievement and F = 25.889 (η² = 0.254) for anxiety, both significant at p = 0.000. The MANOVA test yielded Pillai's Trace = 0.522 with p = 0.000, proving that the model had a simultaneous effect on both variables. This model is proven to integrate cognitive, affective, and spiritual dimensions holistically. It is recommended to replicate at different levels and triangulate anxiety instruments psychophysiologically to strengthen the validity of further research. Mathematics anxiety represents a persistent psychological barrier that consistently undermines students' motivation and academic achievement, particularly at the junior secondary level. This study aimed to analyze the effect of the Integrated ADLX Introflex Terpadu model on mathematics achievement and mathematical anxiety among junior high school students in Bandar Lampung. A quantitative approach with a Quasi-Experimental Pretest-Posttest Control Group Design was employed, involving 79 eighth-grade students comprising 38 experimental and 41 control group participants. Instruments included a mathematics achievement test (α = 0.87) and a mathematics anxiety questionnaire (α = 0.89). Data were analyzed using MANOVA following confirmed assumptions of normality and homogeneity. Partial test results yielded F = 56.907 (η² = 0.428) for achievement and F = 25.889 (η² = 0.254) for anxiety, both significant at p = 0.000. MANOVA produced Pillai's Trace = 0.522 at p = 0.000, confirming simultaneous significant effects on both dependent variables. The model effectively integrates cognitive, affective, and spiritual dimensions holistically. Replication across different educational levels and psychophysiological triangulation of anxiety measurement instruments are recommended to strengthen the validity of future research.
Co-Authors A.A. Ketut Agung Cahyawan W Achi Rinaldi Adib, Muhammad Agus Pahrudin Akbar Handoko Amanda Diah Pangestika Amiruddin Amiruddin Ana Risqa JL Andini, Dita Anindhita, Wike Anna Fajriyah Annida Luthfia Putri Aprilia, Eka Arini Alhaq Astriana Putri Baharudin Baharudin Bambang Budiwiranto Bambang Sri Anggoro Christina Khaidir Christina Khaidir Delviana, Desti Desi Vitona Dewi, Eva Sima Dewi, Eva Sima Dewi, Wiwik Sulistiana Dewi, Wiwik Sulistiana Dian Anggraini Djaffar Lessy Dona Dinda Pratiwi Een Yayah Haenilah Eka Aprilia Elny Yulinda Sarai Ependi, Asip Eti Hadiati Faisyal, Intan Dyra Shari Fani Sisco Predi Farida Farida Farida, Farida Fitriani Fitriani Fitriani Fitriani Fitriani, Rahayu Fraulein Intan Suri Fredi Ganda Putra Gasmi, Nur Muhammad Gumanti, Agung Akbar Maden Gunawan, Syahrul Hani Nastiti Tantika Hanifah Hanifah Hariri, Hasan Harum Yeni Rachmah, Harum Yeni Iip Sugiharta Imam Syafe'i Imam Syafe’I Indrawan Al Ikhsan Indri Yulianti Iwan Kuswidi Jamaluddin, Wan Kartika Ramadona Koharuddin KOMARUDIN Laila Puspita Laila Puspita, Laila Laswadi Laswadi Lekok Melya Lestari, Bella Dwi Lestari, Bella Dwi Lesyani, Rizsa Lintang Fitra Utami Lutfiatul Khofifah M. Sayid Wijaya Maharani, Maghfira Maharani, Maghfira Mardani, Lingga Afriansyah Mardani, Lingga Afriansyah Melya, Lekok Melya, Lekok Minda Ayu Rahmasari Muhamad Syazali Muhammad Sholeh Muhammad Syazali Mujib Mujib, Mujib Murtadho , Ali Muthiah Miftahul Jannah Nadya Amalia Juana Nia Agustiana Ningrum, Septia Nirva Diana Novian Riskiana Dewi Noviana, Dewi Nur Fitri Lestari Nurhanurawati Nurhanurawati Nurlaila Sehuwaky Oktaria, Risa Pangestika, Amanda Diah Pangestika, Amanda Diah Pramodana, Dimas Raba PRIMAYEKTI, RIZKY Putri Oktaviana Rahmah, Fadila Ramadona, Kartika Rani Damayanti Rani Damayanti, Rani Rany Widyastuti Rany Widyastuti Rany Widyastuti Resti Ayuni Suri, Indah RIADDIN, DINAR Rifa Fahrullisa Riyama Ambarwati Rizki Wahyu Yunian Putra Ruchimat Haslan Ryan Pratama, Elva Santi Widyawati Sapta Desty Sugiharti Sari, Anggun Lupita Sari, Filian Yunita Septia Ningrum Septuri Silvi Anisa Siska Andriani Siti Hasanah Sri Purwanti Nasution, Sri Purwanti Suci Wulan Pawhestri Sufian, Muhammad Sugeng Sutiarso Suherman Suherman Suherman Suherman Suherman Suherman, Suherman Sunarto Sunarto Sunyono - - Syarif Maulidin Syifa Salsabila, Naura Taat Herliana Tina Fitriani Wahyana, Rosi Wan Jalamuddin Z Wan Jamaluddin Z Wawan Gunawan Widiyastuti, Rany Widiyastuti, Rany Yuliani, Endah Yuniar, Devvi Mila Yustika Fatimatuz Zahra Zahra, Yustika Fatimatuz