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Alotrop Jurnal Pendidikan dan Ilmu Kimia
Published by Universitas Bengkulu
ISSN : 22528075     EISSN : 26152819     DOI : -
Core Subject : Science, Education,
Chemistry Education
Welcome to the Journal Alotrop, is an Open-Acces and peer-reviewed journal aims to publish scientific articles related to chemistry and education :i.e an interaction between natural sciences, educational sciences, technologies and management for both education and sciences and wise use of resources. We particularly encourage manuscripts that discuss contemporary research that can be used directly or inderecly in adressing critical issues and sharing of advanced knowledge and best practices in chemistry and education.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 15 Documents
 1   2 
Search results for , issue "Vol 1, No 2 (2017)" : 15 Documents clear
IMPLEMENTASI KURIKULUM 2013 BAGI GURU KIMIA DI SMA NEGERI SEKOTA BENGKULU Ahaky Roza Clorawati; Salastri Rohiat; Hermansyah Amir
ALOTROP Vol 1, No 2 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i2.3535

Abstract

[IMPLEMENTATION OF 2013 CURRICULUM FOR CHEMICAL TEACHERS IN SMA Negeri AT BENGKULU ] This research is a description research conducted from SMA Negeri 1 to SMA Negeri 10 Kota Bengkulu for chemistry teacher in 2016/2017 academic year. This study aims to describe the implementation of the 2013 curriculum for chemistry teachers in the SMA Negeri in Bengkulu City. The population of this research is all the chemistry teachers who teach in ten SMA Negeri in Bengkulu consisting of 42 teachers. Samples were taken by proportional random sampling technique as much as 20%, but the samples taken are teachers who have implemented the curriculum 2013. Obtained final sample of 26 teachers. In this study, a questionnaire was used to collect data, including indicators of the overall implementation of the curriculum, scattered on 53 points of statement, using Likert Scale with a score of 1 to 4. which was then processed using Statistical Product Service Solution(SPSS)16 program. The results showed that the implementation of the 2013 curriculum, the average percentage of teachers who have implemented is 66.67% with the category mostly implemented. Specifically that is, planning obtained at 65,385%, implementation obtained at 57,692%. and assessment of learning result obtained at 76,923% with category mostly executed.
UJI FRAKSI ETIL ASETAT DAUN Peronema canescens TERHADAP Plasmodium berghei PADA Mus musculus Fuji Ramadenti; Agus Sundaryono; Dewi Handayani
ALOTROP Vol 1, No 2 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i2.3508

Abstract

[DETERMINATION OF ETHYL ACETATE FRACTION FROM Peronema canescens LEAF EXTRACT  AGAINST Plasmodium berghei  INFECTED  Mus musculus] This study was conducted to identify secondary metabolite compounds contained in ethanol extract and ethyl acetate fraction from Peronema canescens leaf (sungkai) and to measure the effect of ethyl acetate fraction on anti plasmodium  activity on Mus musculus infected by  Plasmodium berghei. The ethyl acetate extract was obtained by maceration of leaves with 96% ethanol solution in3 days followed by fractionation by ethyl acetate for further test. 25 of male white  M. musculus  with the weight 20-40 g and 6-8 weeks old , divided into 5 groups with 5 head / group. Groups 3, 4 and 5 are treated and groups 1 and 2 are controls. The negative control will be given food and drink only, and for positive control group will be given chloroquine with dose  0,028,  0,056, and  0,084 g / KgBW.  Development of levels of parasitemia were calculated by by observing a thin blood smear with giemsa staining under a microscope , observed until the parasitemia in the blood had reached 20-30% to be given a 3-day follow-up treatment, and then for the next 7 days after it was given treatment.. Anti-plasmodium activity test is determined by the number of parasitemia, percent growth and resistance of parasitemia in the blood. Data were analyzed by using one way anova method (? = 0,05 and 0,01). The results showed that the secondary metabolite compounds found in the ethyl acetate fraction of  P.canescens leaf, namely alkaloids, flavonoids, tannins and phenolics and at a dose of 0.056 g / KgBW  ethyl acetate fraction  can inhibit the growth of parasitemia in the blood of  M. musculus by 50 , 89% , with greater percentage of parasitemic inhibition compared with positive and negative control group.
HUBUNGAN PERSEPSI SISWA KELAS X MIPA DI SMA NEGERI SEKOTA BENGKULU TAHUN AJARAN 2016/2017 TENTANG VARIASI GAYA MENGAJAR GURU DENGAN HASIL BELAJAR KIMIA Indah Ayu Lestari; Hermansyah Amir; Salastri Rohiat
ALOTROP Vol 1, No 2 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i2.3525

Abstract

[RELATIONS  OF STUDENTS PERCEPTION AND  VARIATION TEACHING STYLE   WITH  CHEMISTRY LEARNING  OUTCOMES  AT CLASS X MIPA IN SMA NEGERI KOTA BENGKULU  IN 2016/2017 ACADEMICS YEAR ] In teaching and learning activities at school, often faced with the problem of low student learning outcomes. Student learning outcomes is one indicator to measure success in the implementation of learning process. Student learning outcomes are influenced by several factors, both external and internal factors. One of the internal factors that can affect student learning outcomes is perception. The object of perception here is the variation of the teacher's teaching style. The purpose of this study is to obtain data about students' perceptions about the variation of teaching style of chemistry teacher and student chemistry learning outcomes in SMA Negeri Kota Bengkulu academic year 2016/2017. Polpulation in this research is all students of class X of MIPA in State Senior High School of Bengkulu which amounted to 1620 students. The technique of determining the sample that will be used by the researcher is Proportional Random Sampling technique and the sample is 324 students. Data analysis used in this research is descriptive analysis, normality test, linearity, correlation and hypothesis test. Based on the analysis, the correlation coefficient value is 0.232 > 0.11 (r count t > r table), and t count > t table (4,312 > 1,967), indicating that there is a significant positive correlation between students' perception about teacher teaching style variation and student's chemistry learning result.
ANALISIS Hg2+ DENGAN MENGGUNAKAN NANOPARTIKEL PERAK (NPP) SEBAGAI INDIKATOR KOLORIMETRI DENGAN METODE SPEKTROFOTOMETRI Renaldi Adriansyah; M. Lutfi Firdaus; Elvinawati Elvinawati
ALOTROP Vol 1, No 2 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i2.3539

Abstract

[ANALYSIS OF Hg2+ USING NANOPARTIKEL METAL (NPP) AS A COLORIMETRY INDICATOR WITH SPECTRUMFOTOMETRY METHOD]. Mercury (Hg) is heavy metal with high toxicity that often pollutes the aquatic environment. Concentration of Hg (II) ions is usually determined by using ICP-MS and AAS but because its price relatively expensive an alternative is needed to determine concentration of Hg. Therefore, the purpose of the study was to conduct synthesis of silver nanoparticles (NPP) by utilizing extract of Phyllanthus acidus ceremin fruit as a colorimetric indicator for alternative analysis concentration of Hg metal in digital image. Bio NPP used as a colorimetric indikator of Hg metal in this study was synthesized at optimum condition. The optimum condition of Bio NPP synthesis was obtained on the ratio of extract volume of P. acidus  fruit and AgNO3 1: 1 and the duration of exposure to sunlight for 1 hour.The formed Bio NPP knew to be selective against Hg (II) metal ions characterized by the change of Bio NPP color from brownish yellow to clear. In addition, the Bio NPP that has been synthesized  in this study can be used as a colorimetric indicator of Hg metal analysis using spectrofotometer uv-vis with detection limit  7.56 ppb.  
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA Daily ChemQuiz DAN PERMAINAN Ranking One Chemistry Quiz Tiya Rurin Utari; Amrul Bahar; Dewi Handayani
ALOTROP Vol 1, No 2 (2017)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v1i2.3509

Abstract

[COMPARISON OF STUDENTS LEARNING RESULT USING MEDIA Daily Chem Quiz AND GAMES Ranking One Chemistry Quiz]  The aim of this research is to know the difference of students' chemistry learning result using Daily Chem Quiz (DC Quiz) and Ranking One Chemistry Quiz (ROC Quiz) media at class X MIPA in SMA Negeri 1 Bengkulu Tengah 2016 / 2017 academic year. This research is quasi research experiment. The independent variables are DC Quiz and ROC Quiz media, the dependent variable is the students' learning result and the control variable is the Think-Pair-Share (TPS) cooperative learning methods. The population is all students of class X MIPA at 2016/2017 academic year consisting of 4 classes, and to determine the sample is done by homogeneity test then taken by simple random sampling. The selected sample is the class X MIPA 3 as experiment class I using DC Quiz and class X MIPA 1 as experimental class II using RC Quiz . Data analysis used were mean score, normality test, homogeneity test, and t test. Based on posttest value of both class, it is known that the average value of posttest at experiment class I is 78.79 and at  experiment class II is 84,77. The result of data analysis shows that the data is normally distributed and has homogeneous variance and obtained t count> ttabel (2,47> 2,39). The results of this study indicate that H0 rejected and Ha accepted in other words there is a significant difference between student learning outcomes using DC Quiz media and RC Quiz media.

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