Sri Dwiastuti
Biology Education, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Indonesia

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Excretory system learning in senior high school: comparative analysis of students’ problem solving skills Maharani Aji Kharisma Rindah; Sri Dwiastuti; Yudi Rinanto
Biosfer: Jurnal Pendidikan Biologi Vol 12 No 2 (2019): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/biosferjpb.v12n2.249-257

Abstract

Problem-solving skills are the skills essential for students to have. This research aimed to analyze the problem-solving skills of senior high school students in biology learning of excretory system topics. The method used was descriptive-quantitative. The data were collected using a problem-solving essay test. The subjects were the eleventh-grade students of senior high schools in Surakarta, who were divided into A category (upper class) and B category (low level). Based on the analysis result, it can be seen that the problem-solving skill achievement of the eleventh grade of A group includes: defining the problem (50.78%), examining the problem (40.62%), planning a solution (19.53%), implementing the solution (37.50%), and evaluating (40.62%); while that of B category includes: Defining the problem (46.35%), examining the issue (34.67%), planning a solution (18.54%), implementing the solution (20.96%), and evaluating (32.25%). The lowest percentage in both categories was found in planning the solution and evaluating. Based on the result, the average problem-solving skills in A group is 37.81% and B Category 32,26%. Based on the data, it can be concluded that students' problem-solving skills in A and B categories are still low. The skills can be improved by conducting problem-solving based learning and familiarizing students to solve problems according to problem-solving stages.
Dynamic assessment on high school biology students’ reasoning skills Murni Ramli; Mayasari Mahfudhotul Khasanah; Sri Dwiastuti
Biosfer: Jurnal Pendidikan Biologi Vol 14 No 1 (2021): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/biosferjpb.11768

Abstract

Reasoning skills of students may be improved through a sort of feedback constructed in the dynamic assessment. The research aims to analyze the effect of dynamic assessment on high school biology students' reasoning skills. The research employs a quasi-experimental method with a pretest-posttest control group design. The participants were students of grade X Science Program (N=61), which were selected purposively. Data on reasoning skills was collected by pretest and posttest focused on the concepts of bacteria. with dynamic assessment method. The data analysis technique employs an Independent sample t-test. The research result indicate that Dynamic Assessment provides better effect on students’ reasoning skills in Bacteria material.