Browsing by Author "Usman"
Now showing items 21-40 of 88
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Developing Scrabble as a Chemistry Learning Media for Hydrocarbon Subject Matter Learning Using Problem Based Learning at SMK Muhammadiyah 3 Samarinda
Khairunnisah, Nur; Subagiyo, Lambang; Usman (Atlantis Press, 2018)This study aims to develop a learning media of Scrabble Hydrocarbon Chemistry on Subject Hydrocarbons which is effective and practical. The subjects of this study were class X students of SMK Muhammadiyah 3 Samarinda. ... -
Developing Scrabble as a Chemistry Learning Media for Hydrocarbon Subject Matter Learning Using Problem Based Learning at SMK Muhammadiyah 3 Samarinda
Khairunnisah, Nur; Subagiyo, Lambang; Usman (Atlantis Press, 2019-09)This study aims to develop a learning media of Scrabble Hydrocarbon Chemistry on Subject Hydrocarbons which is effective and practical. The subjects of this study were class X students of SMK Muhammadiyah 3 Samarinda. This ... -
The Effect of Application of 5E Learning Cycle Model Combined Numbered Head Together (NHT) Toward Chemistry Learning Outcomes on The Subject of Salt Hydrolysis in Science Students At Senior Hight Scool 1 Tanah Grogot Academic Year 2014/2015.
Usman (Faculty of Teacher Training and Education Mulawarman University, 2015-09)This study aims to determine the effect of application of 5E learning cycle modelcombined numbered head together (NHT) toward chemistry learning outcomes on the subject of salt hydrolysis in XI science students at Senior ... -
THE EFFECT OF APPLICATION OF 5E LEARNING CYCLE MODEL COMBINED NUMBERED HEAD TOGETHER (NHT) TOWARD CHEMISTRY LEARNING OUTCOMES ON THE SUBJECT OF SALT HYDROLYSIS IN XI SCIENCE STUDENTS AT SENIOR HIGH SCHOOL YOT 1 TANAH 2014/2015
Kurnia, Yuni; Usman; Kusumawardani, Ratna (International Seminar Chemistry Education Faculty of Teacher Training and Education Mulawarman University, 2015-04)This study aims to determine the effect of application of 5E learning cycle model combined numbered head together (NHT) toward chemistry learning outcomes on the subject of salt hydrolysis in XI science students at Senior ... -
THE EFFECT OF APPLICATION OF 5E LEARNING CYCLE MODEL COMBINED NUMBERED HEAD TOGETHER (NHT) TOWARD CHEMISTRY LEARNING OUTCOMES ON THE SUBJECT OF SALT HYDROLYSIS IN XI SCIENCE STUDENTS AT SENIOR HIGH SCHOOL YOT 1 TANAH 2014/2015
Kurnia, Yuni; Usman; Kusumawardani, Ratna (International Seminar Chemistry Education Faculty of Teacher Training and Education Mulawarman University, 2015-04)This study aims to determine the effect of application of 5E learning cycle model combined numbered head together (NHT) toward chemistry learning outcomes on the subject of salt hydrolysis in XI science students at Senior ... -
Effectiveness of Using Google Forms in the Problem Based Learning Model to Increase the Critical Thinking Ability of High School Students
Erni, Endah Sari; Usman; Abdul, Hakim (Atlantis Press, 2020)This study aims to examine the effectiveness of using Google Forms in the Problem Based Learning (PBL) model to improve the critical thinking skills of high school students. The research method used experimental research ... -
Effectiveness of Using Google Forms in the Problem Based Learning Model to Increase the Critical Thinking Ability of High School Students
Sari, Erni Endah; Usman; Hakim, Abdul (Antlantis Press, 2020-04)This study aims to examine the effectiveness of using Google Forms in the Problem Based Learning (PBL) model to improve the critical thinking skills of high school students. The research method used experimental research ... -
Effectiveness of Using Google Forms in the Problem Based Learning Model to Increase the Critical Thinking Ability of High School Students
Sari, Erni Endah; Usman; Hakim, Abdul (Atlantis Press, 2020-04)This study aims to examine the effectiveness of using Google Forms in the Problem Based Learning (PBL) model to improve the critical thinking skills of high school students. The research method used experimental research ... -
The Effectiveness of Using Learning Media 3D Pop-Up Chemistry Assisted by Project Based Learning (PjBL) Learning Model Against Student Learning Outcomes on the Subject of Colloid Systems in SMA Negeri 12 Samarinda
Ijai, Ijai; Lambang, Subagiyo; Nurlaili; Usman (IOSR Journal of Research & Method in Education (IOSR-JRME), 2021-04-01)Background: Learning media is one important aspect that can affect the quality of student learning at school. Lack of use of media in the learning process can affect student motivation and learning outcomes in schools, ... -
The Effectiveness of Using Learning Media 3D Pop-Up Chemistry Assisted by Project Based Learning (PjBL) Learning Model Against Student Learning Outcomes on the Subject of Colloid Systems in SMA Negeri 12 Samarinda
Ijai; Subagiyo, Lambang; Nurlaili; Usman (IOSR Journal of Research & Method in Education (IOSR-JRME), 2021-03)Learning media is one important aspect that can affect the quality of student learning at school. Lack of use of media in the learning process can affect student motivation and learning outcomes in schools, the growth of ... -
GC-MS profiling and DPPH radical scavenging activity of the bark of Tampol (Baccaurea macrocarpa)
Erwin, Erwin; Pusparohmana, Widar Ristiyani; Sari, Indah Permata; Hairani, Rita; Usman (F1000 Research, 2019-12-12)Background : Tampoi ( Baccaurea macrocarpa) is a tropical rainforest plant that produces edible fruit and is native to Southeast Asia, especially East Kalimantan, Indonesia. Previous research showed that Tampoi potentially ... -
INDIKATOR ASAM BASA DARI EKSTRAK ETANOL PUCUK DAUN PUCUK MERAH (Syzygium oleana)
Sukemi; Usman; Putra, Boyfanie Ivan; Purwati, Widya; Rahmawati, Nindy Nur; Pradani, Sela Devi Alib (JKPK (JURNAL KIMIA DAN PENDIDIKAN KIMIA), 2017-12)Praktikum indikator asam basa alami biasanya dilakukan dengan mengekstrak bahan alam dengan pelarut tertentu, menguji ekstrak dengan berbagai macam larutan asam, basa dan netral, mencatat perubahan warnanya, menyimpulkan ... -
ISOLATION AND CHARACTERIZATION OF STIGMASTEROL AND -SITOSTEROL FROM WOOD BARK EXTRACT OF Baccaurea macrocarpa Miq. Mull. Arg
Erwin; Pusparohmana, W.R; Safitry, R.D.; Marliana, E.; Usman; Kusuma, I.W (RASAYAN J. Chem, 2020-10)Baccaurea macrocarpa Miq. Mull. Arg. (known locally as Tampoi) is one of the edible fruit plants found in the forests of Borneo. The crude extract of wood bark of Tampoi was partitioned with n-hexane and ethyl acetate ... -
Isolation of Natural Derivated Steroidal from Bark Stem of Melochia umbellata (Houtt) Stapf var. degrabrata K
Usman; Soekamto, Nunuk Hariani; Natsir, Muhammad; Maulidiyah (Asian Journal of Chemistry, 2020-02-25)Exploration of the natural product as pharmaceutical drug widely discover continuously for human life. The unique chemical compounds have been explored from bark stem of Melochia Umbellata (Houtt) Stapf var. degrabrata K. ... -
ISOLATION OF SECONDARY METABOLITE COMPOUNDS AND ANTIBACTERIAL ACTIVITIES TESTS FROM HEXANE EXTRACT OF STEM BARK MELOCHIA UMBELLATA (HOUTT) STAPF VAR. DEGRABRATA K
Usman; Amir, Muh.; Soekamto, Nunuk Hariani; Ahmad, Ahyar; Maulidiyah (Asian J Pharm Clin Res, 2018-05-05)Objectives: This research aims to determine the content of secondary metabolite compounds and antibacterial activity of stem bark extract Melochia umbellata (Houtt) Stapf var. degrabrata. Methods: M. umbellata stem bark ... -
KEMAMPUAN KOGNITIF SISWA SMA YANG DIAJAR DENGAN MODEL PEMBELAJARAN SIMAYANG BERBANTUKAN MEDIA WORKSHEET PADA POKOK BAHASAN LARUTAN ELEKTROLIT DAN NONELEKTROLIT
Oktariani, Mega Carlita; Usman; Muflihah (Seminar Nasional Kimia dan Pendidikan Kimia, 2019)Model pembelajaran Si- Lima Layang – Layang (SiMaYang) merupakan model pembelajaran yang membuat siswa menjadi lebih aktif dan kreatif. Penelitian ini bertujuan untuk menganalisis kemampuan kognitif siswa menggunakan model ... -
KEMAMPUAN KOGNITIF SISWA SMA YANG DIAJAR DENGAN MODEL PEMBELAJARAN SIMAYANG BERBANTUKAN MEDIA WORKSHEET PADA POKOK BAHASAN LARUTAN ELEKTROLIT DAN NONELEKTROLIT
Oktariani, Mega Carlita; Usman; Muflihah (Seminar Nasional Kimia dan Pendidikan Kimia, 2019)Model pembelajaran Si- Lima Layang – Layang (SiMaYang) merupakan model pembelajaran yang membuat siswa menjadi lebih aktif dan kreatif. Penelitian ini bertujuan untuk menganalisis kemampuan kognitif siswa menggunakan model ... -
Misconception Identification Of Buffer Solution Concept And Students’ Learning Style
Abdul, Majid; Usman; M. Amir; Suyono; Binar K, Prahani (IOSR Journal of Research & Method in Education (IOSR-JRME), 2018-04-09)The purpose of this study is to prevent misconception on the subject of buffer solution and students’ learning style. The population of this research is class XI SAINS SMA Negeri 1 Samarinda. The sample of this research ...