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MEDIA PEMBELAJARAN KIMIA BERBASIS KOMPUTER UNTUK MATERI HIBRIDISASI KELAS XI SMA Fitri Wijayanti, Yerimadesi, Syukri S,
SEMIRATA 2015 Prosiding Bidang Iptek dan Multi Disiplin
Publisher : SEMIRATA 2015

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.017 KB)

Abstract

Hibridisasi dan bentuk molekul yang diajarkan di SMA merupakan jenis konsep yang abstrak, sehingga sulit memahami dan menjelaskannya. Oleh karena itu dibutuhkan suatu media alternatif yang dapat digunakan oleh guru dan siswa. Penelitian ini bertujuan untuk menghasilkan media pembelajaran berbasis komputer yang layak digunakan untuk memahami konsep hibridisasi. Media dirancang dan dibuat menggunakan program macromedia flash 8,  disajikan dalam bentuk gambar, animasi sederhana, dan disertai dengan pertanyaan interaktif untuk menuntun siswa menemukan kesimpulan pada setiap penanaman konsep. Penelitian ini termasuk penelitian pengembangan atau Research and Development (R&D). Uji kelayakan dilakukan kepada siswa kelas XI IPA di SMAN 1 IV Koto Kabupaten Agam. Instrumen penelitian yang digunakan berupa angket yang berisi pernyataan menyangkut bentuk, motivasi, dan kepraktisan dari media. Data yang diperoleh dianalisis dengan skala Likert. Hasil analisis angket menunjukkan skor rata-rata kelayakan media untuk topik hibridisasi secara keseluruhan adalah 4,24. Skor ini diinterprestasikan pada kategori kelayakan dengan nilai standar kelayakan (r)  4. Hasil ini menunjukkan bahwa media pembelajaran berbasis  komputer untuk materi hibridisasi sangat layak digunakan untuk pembelajaran kimia kelas XI SMA.   Kata kunci: bentuk molekul, hibridisasi, media berbasis komputer, uji kelayakan
Validitas Dan Praktikalitas Modul Reaksi Redoks dan Sel Elektrokimia Berbasis Guided Discovery Learning untuk SMA Yerimadesi, Yerimadesi; Bayharti, Bayharti; Oktavirayanti, Risa
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 2 No 1 (2018): JEP : Jurnal Eksakta Pendidikan
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (951.846 KB) | DOI: 10.24036/jep/vol2-iss1/143

Abstract

Module based on guided discovery learning can be used as an alternative to improve student’s activeness and understanding the concept. This research aims to develop redox reaction and electrochemical cell module based on guided discovery learning and reveals its validity and practicability. The type of this research is a development research using 4-D development model. The research instrument used was a questionnaire in the form of validity and practicality sheet. This module was validated by 3 UNP chemistry lecturers and 2 chemistry teachers of SMAN 10 Padang. Practicality test were conducted on 2 chemistry teachers and 32 twelfth grade students of SMAN 10 Padang. Data were analyzed by Cohen’s Kappa formula. The results of the validity test showed that the module has a very high validity category (k=0.83). Practicality test results by teachers and students showed that the module has high practicality category (k=0.79 and 0.80). Based on the results of this research, it can be concluded that the module developed was valid, practical.
Pengembangan Lembaran Kerja Siswa (LKS) Ekperimen Berbasis Guided-Inquiry Materi Laju Reaksi Untuk Siswa SMA / MA Andromeda, Andromeda; Yerimadesi, Yerimadesi; Iwefriani, Iwefriani
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 1 No 1 (2017): JEP : Jurnal Eksakta Pendidikan
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (554.89 KB) | DOI: 10.24036/jep/vol1-iss1/47

Abstract

This study aims to produce teaching materials based material reaction rate guided inquiry (learning cycle: the phase of exploration, discovery / establishment of the concept and application) in the form of a valid experiment worksheets and practical use in learning chemistry in SMA / MA. This type of research included in Research and Development (R & D). The development model used in this study is the four-D (4-D). The research instrument is the validation sheet and questionnaire. Data from the study consists of three aspects, namely, the validity, the practicalities and effectiveness of teaching materials. Data validity and practicalities processed using Cohens Kappa formula, and the effectiveness of data using a percentage In this study is limited to the validity and practicalities. Validation of teaching materials from the aspect of content, language and graffiti and feasibility of construction. Data from the validator obtained an average score moment kappa was 0.87, and the results of practical analysis conducted with a limited test in MAN 3 Padang obtained an average score of 0.84 practicality value of 0.78 of teachers and students. From the analysis worksheets that showed 86 % of students working on critical questions and exercises contained in LKS experiments that have been made can be answered students. These results indicate that LKS guided inquiry-based experiments developed extremely valid and practical use in learning chemistry
Efektivitas Penggunaan Modul Larutan Penyangga Berbasis Discovery Learning terhadap Hasil Belajar Siswa Kelas XI MIA SMAN 7 Padang Yerimadesi, Yerimadesi; Putra, Ananda; Ririanti, Ririanti
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 1 No 1 (2017): JEP : Jurnal Eksakta Pendidikan
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.225 KB) | DOI: 10.24036/jep/vol1-iss1/29

Abstract

Quasi experiment research with randomized control posttest group only design was carried out to determine the effectiveness of using a discovery learning based module on students learning outcome. Grade XI MIA-1 to MIA-4 students academic year 2015/2016 in SMAN 7 Padang became population of this study. Through cluster sampling technique, grade XI MIA-1 and grade XI MIA-4 were chosen as experiment and control classes respectively. The experiment class was taught using discovery learning based module in buffer solution topic while the control class was taught the same topic conventionally without the module. Research instrument used was cognitive learning outcome test with multiple choice form. Data showed that the mean test score of experiement class (78.84) was higher than that of control class (71.09). Normality and homogenity test proved that both classes were homogeneous and normally distributed. T-test, as data analysis taken, showed that t-count (3,51) is bigger than t-table (1.67). Thus, it could be concluded that students’ cognitive learning outcome in experiment class is significantly higher than that in control class. The use of discovery learning-based module in buffer solution topic was effective in increasing learning outcome of grade XI MIA students in SMAN 7 Padang.
PENGEMBANGAN MODUL KESETIMBANGAN KIMIA BERBASIS PENDEKATAN SAINTIFIK UNTUK KELAS XI SMA/MA Yerimadesi, Yerimadesi; Bayharti, Bayharti; Handayani, Fitri; Legi, Wiwit Fitrah
Sainstek : Jurnal Sains dan Teknologi Vol 8, No 1 (2016)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (626.792 KB) | DOI: 10.31958/js.v8i1.444

Abstract

This developmental research aimed to produce scientific approach-based module in chemistry equilibrium topic, determine its validity, practicality, and effectiveness on grade XI students? learning outcome. It was based on 4-D development model that included defining, designing, and developing stage. Module was validated by expert and tested to senior high school (SMA) students. Research instruments used were questionnaire in the form of validity and practicality sheets and learning outcome test. Validity sheets were completed by 5 chemistry lecturers and 3 chemistry teachers. Practicality sheets were completed by 4 chemistry teachers and 25 grade XI students in public SMA (SMAN) 2 Batusangkar. Data were analyzed with Kappa Moment. The mean score of Kappa Moment for validity was 0.84 indicating a high degree of validity. The mean score of Kappa Moment for practicality were 0.87 (for students) and 0.84 (for teachers) indicating a very high degree of practicality. Effectiveness of the module was obtained from cognitive test score of students in SMAN 4 Padang. Analysis showed that the test score of students taught with module was siginificantly higher than that of students who were not. It can be concluded that the module developed was valid, practical, and effective for senior high school instruction.Key words: chemistry equilibrium, module, scientific approach.
EKSTRAK DAUN TEH (Camellia sinensis) SEBAGAI ALTERNATIF INHIBITOR KOROSI BAJA DALAM MEDIUM AIR LAUT ., Yerimadesi
Sainstek Vol5, No 1, 2010
Publisher : Jurnal Sainstek

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Abstract

Research about the use of tea leaf (Camellia sinesis) as steel corrosion inhibitor alternative in sea water medium has been done. The aim of this research is to find out the influence of tea leaf extract on the rate of corrosion, the degree of closeness and efficiency of steel corrosion inhibition in sea water medium. The method used is weight loss method (the deficiency of weight). The steel sample has the code of ASSAB 760 (AISI 1148, 0.5%) and the tea leaf sample used is the old tea leaf. The tea leaf is extracted with aquadest as the solvet. The characteristic of steel surface endued and unendued by inhibitor are then analyzed with Carton Stereo Trinocular Optic Photo with 100 times magnification. The result of research shows that the tea leaf extract reduces the rate corrosin of steel ASSAB 760 in sea water medium. The rate of steel corrosion unendued by inhibitor is 1.13 x 10-4 g/cm2.day, the rate of steel corrosion endued by inhibitor (tea leaf extract) is 1.07 x 10-5 g/cm2.day. The efficiency of steel corrosion inhibition increases along with the longer of steel soaked in sea water medium. The analysis of steel surface shows the formation of purple pasive layer from iron-tanin complex. Key words: tea leaf extract, steel corrosion, inhibitor, sea water, iron-tanin complex.
PERBANDINGAN EFISIENSI INHIBISI KOROSI BAJA OLEH EKSTRAK DAUN TEH DENGAN CAMPURAN EKSTRAK DAUN TEH DAN KALSIUM GLUKONAT ., Yerimadesi; Mon, Irma; Elsa Mona, Dewi
Sainstek Vol 5, No 3, 2010
Publisher : Sainstek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (35.713 KB)

Abstract

The inhibition efficiency of steel corrosion by tea leaf extract and mixture of tea leaf extract and calcium gluconate was studied by using weight loss techniques. The steel sample has the code of ASSAB 760 (AISI 1148, 0.5%) and the tea leaf sample used is the old tea leaf. The inhibition efficiency by mixture of tea leaf extract and calcium gluconate is higher than the inhibition efficiency by tea leaf extract. Key words: inhibition efficiency of steel corrosion, tea leaf extract, tea leaf extract/calcium gluconate blends, inhibitor.
Judul Pengembangan E-Modul Larutan Elektrolit dan Non Elektrolit Berbasis Guided Discovery Learning untuk Kelas X SMA/MA Wildayati, Wildayati; Yerimadesi, Yerimadesi
Entalpi Pendidikan Kimia Pre-print Vol 2, No 2, 2021
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v0i0.143

Abstract

Penelitian pengembangan ini bertujuan untuk menghasilkan dan menentukan tingkat validitas dan praktikalitas dari e-modul yang dikembangkan. Jenis penelitian adalah Research and Development (R D) dengan model pengembangan Plomp. Uji validitas dilakukan terhadap empat orang dosen jurusan kimia FMIPA UNP dan tiga orang guru kimia SMA. Uji praktikalitas dilakukan oleh tiga orang guru kimia dan 32 siswa kelas XI SMAN 7 Padang tahun ajaran 2020/2021. Instrumen penelitian berupa angket validitas dan  praktikalitas. Hasil  validitas yang didapatkan dianalisis dengan Content Validity Ratio (CVR) dan praktikalitas dianalisis dengan formula Aikens’V.Dari hasil penelitian diperoleh nilai rata-rata CVR validitas konten e-modul sebesar 0,95 (valid), validitas konstruk 0,82 (valid), praktikalitas e-modul pada guru 0,89 (praktis) dan pada siswa 0,82 (praktis). Berdasarkan hasil penelitian disimpulkan bahwa e-modul larutan elektrolit dan non elektrolit berbasis guided disscovery learning untuk kelas X SMA/ MA yang dikembangkan sudah valid dan praktis.
Validitas E-Modul Kimia Unsur Berbasis Guided Discovery Learning untuk Kelas XII SMA/ MA Khaira, Ulfa; Yerimadesi, Yerimadesi
Entalpi Pendidikan Kimia Vol 2, No 1 (2021)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v2i1.124

Abstract

E-modul kimia unsur berbasis guided discovery learning telah dikembangkan dan dianalisis tingkat validitasnya untuk membantu proses pembelajaran peserta didik. Penelitian ini tergolong kepada Research and Development dengan model Plomp. The e-module divalidasi oleh tujuh orang validator ahli materi dan tiga orang ahli media. Instumen penelitian yang digunakan berupa angket validitas. Data dianalisa dengan menggunakan Content Validity Ratio (CVR) dan formula kappa Cohen’s. Hasil uji validitas konten diperoleh nilai rata-rata CVR sebesar 0,986. Hasil uji validitas konstruk dan validitas ahli media diperoleh nilai rata-rata momen kappa sebesar 0,90 dan 0,89. Data tersebut menunjukkan bahwa e-modul memiliki tingkat kevalidan yang sangat tinggi. Berdasarkan hasil penelitian, disimpulkan bahwa e-modul yang dikembangkan valid serta dapat dilakukan uji praktikalitas dan efektifitasnya.Kata Kunci: e-modul, guided discovery learning, kimia unsur
Pengaruh Penerapan Model GDL Berbasis LSLC Terhadap Hasil Belajar Siswa di SMA Negeri 15 Padang Mahesa, Anggita; Yerimadesi, Yerimadesi
Jurnal Pendidikan Tambusai Vol. 6 No. 1 (2022): April 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.554 KB) | DOI: 10.31004/jptam.v6i1.2997

Abstract

Pelaksanaan kurikulum 2013 belum maksimal dalam proses pembelajaran karena berpusat pada guru. Materi Elekrolisis sulit untuk dipahami. Dengan adanya pengaruh pandemi justru berdampak negatif terhadap hasil belajar siswa. Solusinya guru harus melaksanakan LSLC untuk membentuk komunitas dan berkolaborasi dalam memperbaiki proses pembelajaraan saat ini. Tujuan penelitian untuk mengetahui pengaruh model GDL berbasis LSLC terhadap hasil belajar siswa pada materi elektrolisis di SMA Negeri 15 Padang. Penelitian ini tergolong kepada eksperimen semu. Pengambilan sampel dilakukan dengan teknik random sampling. Hasil analisis data didapatkan bahwa sampel terdistribusi normal dan homogen, maka uji hipotesis dilakukan dengan uji-t pada . Diperoleh thitung 5,08 dk 68 dan nilai ttabel 1,67. Nilai thitung > ttabel artinya hasil belajar siswa yang menggunakan model pembelajaran GDL berbasis LSLC lebih tinggi secara signifikan daripada hasil belajar siswa tanpa menggunakan model pembelajaran GDL berbasis LSLC pada materi elektrolisis di SMA Negeri 15 Padang.
Co-Authors Abdul Razak Abdul Razak Achie Keylla Adzanal Maghribhi Afendi, Silvia Afriandi, Muhammad Aini, Faizah Qurrata Alifa, Zaqiya Zahwa Alizar Alizar Alizar Alizar Alysa Luthfiani Amanda Mareza Amanda, Refni Juwita Ameliana Fitriyanti Ananda Putra Andromeda Andromeda Andromeda Andromeda Andromeda, A. Angreni, Siska Antika, Rindi APMIYANTI, TIARA Aprelianda, Nola Apriani Sijabat Aprilia Susilo, Resti Ardiansyah, Nofry Arfianti, Fina Ariani, Siti Nurfaizah Asnizar, Asnizar Asrizal AYU WULANDARI Az Zahra, Mentari Azizah Kristalia Azla Ismathulhuda Bahrizal Rizal Bali Yana Fitri Bayharti . Bayharti Bayharti Bayharti Bayharti Budhi Oktavia Darmanella Dian Eka Wati Debby Firmantia Putri Desnita Desy Kurniawati DESY KURNIAWATI Desy Kurniawati Desyafrianti, Vanny Dewi Elsa Mona Dewi, Suci Firma Dinalia, Dinalia Dinda Kimala Defri dion, nofrion Dwi Finna Syolendra Effendi, Novicha Efwah Yuli Fitri Said Eka Kartikawati Eka Sovia Elga Joninda Putri Ellizar Jalius Erman, Sylvia Dwi Fadhilah, Najwa Fadila Maharani FADILLAH, MARSHANDA Faizah Qurrata Aini Faizah Qurrata Aini Fajriah Azra Fatni Mufit Fauzana Gazali Fauziah Febrila, Putty Zinda Festiyed Festiyed Festiyed Festiyed Festiyed Festiyed Festiyed, Festiyed Firmantia Putri, Debby Fitri Amelia Fitri Amelia Fitri Arsih Fitria Wijayanti, Fitria Fitriani, Mediana Friyatmi Friyatmi Gunawan, Revi Gina Gunawan, Rilla Gina Guspatni Guspatni Guspatni Hafiza, Ufaira Haifa Hafifah Hardeli Hardeli Hardeli - Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hasanah, Afifah Nur Heffi Alberida Hendri, Jhon Hulu, Joseph Rezeki Humaira, Zulfa Ifan Rivaldo Ilahi, Dian Purnama Ilwandri Ilwandri Ilwandri, Ilwandri Indah Muspita Indang Dewata Irdes Hidayana Siregar Irfandi Irfandi Irma Mon Irma Mon Irma Mon Iryani Iryani Isti, Meila Iwefriani Iwefriani Iwefriani, Iwefriani Izzati, Fitria Jaslin, Syafriffah Jasniar, Jasniar Jr, Fachrur Rachman Juanta, Palma julia Wulandari Julia Wulandari, Julia Junil Adri Jupinta, Agusri Kamilah, Rodiatul Khairurrazak, Khairurrazak Kristalia, Azizah Kurnia, Reni Kurniawan, Niko Ladisa Fergie Imanah Lasmana, Oria Legi, Wiwit Fitrah Leli Astuti LESTARI, TASYA Lillah Fitri Lisa Utami Lufri Lufri Mahesa, Anggita Maifil Dwi Andrean Makrooni, Golaleh MARCHELINA, SALSABILLA Marwiyah Nst, Masringgit Mawardi Mawardi Mega Elvianasti Melati Wahyuni Miftahul Khair Minda Azhar Minda Azhar Monita Sari Munifa Mahdiah Mutiara Sakinah Nadia Julianti Nadia Marsila Nadia, Nadia Afrianti Nadya UP Najmi Elsoraya Nasution, Doli Indra Nikmatusyadiah Nofita, Agnes Nofri Yuhelman Nofri Yuhelman Nofrianto Nofrianto Nofrianto Nofrianto Nola Aprelianda Noliea Nurfitriana . Nurhasnah, Nurhasnah Nurul Aripin Oktavirayanti, Risa Palma Juanta Palma Juanta Pebrianti, Puji Pratiwi, Fitra Adinda Putra, Ananda Putri Hartika Putri, E. J. Putri, Hanna Salwa Putri, Yunella Eka Qiram, M. Abdul Rahimah, Nikmatur Rahmanelli Rahmanelli Rahmatillah Wanti Ramayanti, Nofia Ranti Gusti Rahayu Ratih Komala Dewi Ratih, Arista Raudhatul Jannah Ray Alfandi Gunawan Refi Yeni Revi Gina Gunawan Rezki Pratama Rifka Andani Riga Riki Zaputra Rindiany, Nindy Aprillia Ririanti Ririanti Ririanti, Ririanti Risa Oktavirayanti Rivo Juita Sudirman Romi Habibi Rona Rona Taula Sari, Rona Taula Rosanna, D. L. Rosi Efliana Safitri, Sauli Sahalina, Dwinita Sakinah, M. Sakinah, Mutiara Salsabila, Diva Sandijal Putra Santosa, Tomi Apra Saputra, Sabrizal Septiani, Ulfa Shelvy WA Siagian, Gunaria Silvanny Silvanny Siska Handa Yani Sisri Wahyuni Skunda Diliarosta Skunda Diliarosta Sofianora, Aulia Sovia, Eka Sridefa Rahmi Suci Firma Dewi Suryani, Okta Suryelita Suryelita . Syafrilianto, Syafrilianto Syamsiar, Syamsiar Syukri S Teguh Febri Sudarma Titis Wulandari Tomi Apra Santosa Tomi Apra Santosa Trierdam, Gindi Lajen Ulfa Autafia Ulfa Khaira Ulfa Khaira, Ulfa Ulfa Weni Ulianas, Alizar Utomo, Erwin Pri Vina Dewisartika Viola Dwicha Asda Viona Maharani Warlinda, Y. A. Wely Pramunando Wica Widyanda Wildayati Wildayati Wildayati, Wildayati Winda Permatasari Witri, Rahmi Eka Yeni Nurpatri Yohandri Bow Yondriadi Yondriadi Yul Ifda Tanjung Yuli, Serli Sukma Yulia Asri Warlinda Yulkifli Yuni Adha Yuni Ahda Yuni Ahda Yusmaita, Eka Zahra Ade Wahyuni Zonalia Fitriza Zul Afkar Zulherman Zulyusri Zulyusri Zuwita, Ariani