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Dezi Handayani
UNP
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Languange, Linguistic, Communication & Media Other

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The Influence of Problem Solving Models on Science Process Skills of Students in the Material Excretion of Class VIII SMPN 34 Padang Riza Elpia Delita; Rahmadhani Fitri; Dezi Handayani; Heffi Alberida
ATRIUM PENDIDIKAN BIOLOGI Vol 5, No 1 (2020): Atrium Pendidikan Biologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/apb.v5i1.7026

Abstract

The problem of research at SMPN 34 Padang is the low level of Science Process Skills of students from the results of previous observations by carrying out tests conducted in class VII SMPN 34 Padang, showing the average science process skills of students is less than 50%. This study aims to look at the effect of the Problem Solving Model on Science Process Skills in Grade VIII students of SMPN 34 Padang. In Indonesia, science process skills are very minimal, because in the learning process the teacher still tends to use the lecture model and question and answer method, so the science process skills are not given to students. This type of research is quasi-experimental with research design Control Group Posttest Only Design. The population in this study were eighth -grade students of SMPN 34 Padang in the academic year 2018/2019. The samples from this study were class VIII6 as the experimental class and VIII7 as the control class. The research instrument used to view the science process skills of students is the Observation Sheet for Student Activities observed by the observer. Based on the results of research on science process skills of students, the t count 4.96> t table 1.67 The Science Process Skills Activity of students in the experimental class was higher than the control class. The study concluded that the application the Influence of Problem Solving Models on Science Process Skills of Students in the Material Excretion of Class VIII SMPN 34 Padang
The Influence of Problem Solving Models on Science Process Skills of Students in the Material Excretion of Class VIII SMPN 34 Padang Riza Elpia Delita; Rahmadhani Fitri; Dezi Handayani; Heffi Alberida
ATRIUM PENDIDIKAN BIOLOGI Vol 5, No 4 (2020): Atrium Pendidikan Biologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/apb.v5i4.6763

Abstract

The problem of research at SMPN 34 Padang is the low level of Science Process Skills of students from the results of previous observations by carrying out tests conducted in class VII SMPN 34 Padang, showing the average science process skills of students is less than 50%. This study aims to look at the effect of the Problem Solving Model on Science Process Skills in Grade VIII students of SMPN 34 Padang. In Indonesia, science process skills are very minimal, because in the learning process the teacher still tends to use the lecture model and question and answer method, so the science process skills are not given to students. This type of research is quasi-experimental with research design Control Group Posttest Only Design. The population in this study were eighth -grade students of SMPN 34 Padang in the academic year 2018/2019. The samples from this study were class VIII6 as the experimental class and VIII7 as the control class. The research instrument used to view the science process skills of students is the Observation Sheet for Student Activities observed by the observer. Based on the results of research on science process skills of students, the t count 4.96> t table 1.67 The Science Process Skills Activity of students in the experimental class was higher than the control class. The study concluded that the application the Influence of Problem Solving Models on Science Process Skills of Students in the Material Excretion of Class VIII SMPN 34 Padang 
The Effect of Model Problem Solving on Students' Science Process Skills Class VIII SMPN 34 Padang Riza Elpia Delita; Rahmadhani Fitri; Dezi Handayani; Heffi Alberida
ATRIUM PENDIDIKAN BIOLOGI Vol 4, No 4 (2019): Atrium Pendidikan Biologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/apb.v4i4.6148

Abstract

The problem of research at SMPN 34 Padang is the low level of Science Process Skills of students from the results of previous observations by carrying out tests conducted in class VII SMPN 34 Padang, showing the average science process skills of students is less than 50%. This study aims to look at the effect of the Problem Solving Model on Science Process Skills in Grade VIII students of SMPN 34 Padang. In Indonesia science process skills is very minimal, because in the learning process the teacher still tends to use the lecture model and question and answer method, so the science process skills is not given to students. This type of research is quasi-experimental with research design Control Group Postest Only Design. The population in this study were eighth grade students of SMPN 34 Padang in the academic year 2018/2019. The samples from this study were class VIII6 as the experimental class and VIII7 as the control class. The research instrument used to view the science process skills of students is the Observation Sheet for Student Activities observed by the observer. Based on the results of research on the knowledge competencies of students, the tcount 4.96> t table 1.67 The Science Process Skills Activity of students in the experimental class was higher than the control class. The conclusion of the study was that the application of the Problem Solving Model had a positive effect on the Science Process Skills of Grade VIII students of SMPN 34 Padang.
Isolation of Phosphate Solubilizing Endophytic Fungi From Rice Plant Root Dezi Handayani; Mades Fifendy; Verawati Yesni
Bioscience Vol 2, No 1 (2018): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (343.472 KB) | DOI: 10.24036/020182110043-0-00

Abstract

Root endophytic fungi plays different roles for plant, such as plant growth promoting properties, agents to control phytopathogens, and increase phosphorus uptake. Since phosphorus are essential for plant growth and its occurance are limited, so it is necessary to explore these fungus to replace the used of synthetic fertilizer. The objective of this study were to obtain root endophytic fungi from rice plant and to determine its phosphate solubilization ability. The root organ of rice plant was subjected for isolation. Pikovskaya medium was use to determine the fungal phosphorus solubilization ability. Fungal morphological characteristics was carried out by macroscopic and microscopic appearance assessment using microscope. Seven endophytic fungi were successfully isolated from rice plant root sample. Four isolate were micelial steril with no conidia, two isolate refers to Aspergillus and 1 isolate have 2-4 conidia at the tip of conidiophores. Amongs 7 endophytics fungi, only one isolate (P2B3) had the ability to solubilize phosphate with the phosphate solubilization index value 20.45 %.
Co-Authors Heffi Alberida Mades Fifendy Rahmadhani Fitri Riza Elpia Delita Verawati Yesni