Jurnal Pendidikan Matematika dan IPA
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ANALYSIS IMPLEMENTATION OF TECHNOLOGICAL PEDAGOGICAL CONTENT KNOWLEDGE BY SCIENCE TEACHERS THROUGH DISTANCE LEARNING AT JUNIOR HIGH SCHOOL IN MEDAN
Full text linkThis research aims to analyze the application of the TPACK framework by teachers in distance learning at junior high schools in Medan. Curriculum 2013 in Indonesia been applying for 5 years. However, an evaluation of how does the teacher deliver learning subjects (pedagogy knowledge), and the implementation of subject mastery (content knowledge) and technology mastery (technology knowledge) is strongly suggested. In this research also used a qualitative descriptive method by providing a google form questionnaire to 10 junior high school teachers in the city of Medan as samples drawn with simple random sampling. The data was obtained based on the answers to questions from 10 junior high school science teachers, where 7 teachers were public school educators and the other 3 teachers were educators in private schools from different schools. The process of collecting data through a questionnaire containing questions that must be filled in by the teacher about their agreement or disagreement with the questions given in the questionnaire (Likert scale). The questions made are invincible with TPACK aspect. Based on the instruments that have been developed, researchers have obtained that the teachers already know and apply TPACK in distance learning well through the understanding and abilities possessed by the junior high school science teachers in carrying out the learning process in the classroom, especially on the topic of temperature and heat
THE EFFECT OF PHYPHOX APPLICATION ASSISTANT GUIDED INQUIRIES ON ABILITY STUDENT CREATIVE THINKING
Full text linkThis study aims to determine the effect of using a guided inquiry-based phyphox smartphone sensor application on creative thinking skills and improvement. The sample of this research is the students of class X IPA 3 SMA N 1 Kotabumi. The research design used was One Group Pretest-Posttest. The treatment is in the form of partially elastic collision learning assisted by a guided inquiry-based phyphox application that can be processed using Microsoft Excel. Data on students' creative thinking skills were obtained using a description test instrument. The technique of analyzing student learning outcomes data is using Paired Sample T-Test. Based on the results of the study, the average score of creative thinking skills increased by 35%, the average N-gain was 0.52 sig. (2-tailed) the value was less than 0.05. The results of partially elastic collision learning using a phyphox smartphone sensor based on guided inquiry have a significant effect on increasing students' creative thinking skills
METACOGNITIVE SKILLS ANALYSIS OF STUDENTS IN INTEGRAL CALCULUS PROBLEM SOLVING
Full text linkThis study aims to describe the profile of students' metacognitive skills in solving integral calculus problems seen from the aspects of planning, monitoring and evaluation metacognitive skills. The research method used is descriptive qualitative research methods. The subjects in this study were 3rd semester students who had taken courses or were taking calculus II courses for the 2020/2021 academic year which were carried out using purposive sampling technique. In this study, the instrument used was a test to measure the ability in solving integral calculus problems in the form of essay questions, unstructured interview guidelines, documentation and observation. Data were analyzed in three stages, namely reduction, presentation, and conclusion or verification. The results in this study were students with high problem solving abilities had met the indicators of metacognitive skills, namely the planning, monitoring and evaluation stages. Students with moderate problem-solving abilities have only reached indicators of metacognitive skills, namely the planning and monitoring stages, but have not reached the evaluation stage, while students with low problem-solving abilities have not measured metacognitive skills indicators both at the planning, monitoring and evaluation stages. So that students with high problem solving abilities are more likely to have good metacognitive skills, because students with high problem solving abilities are well organized from planning, monitoring to the evaluation stage
The Influence of Stad Cooperative Strategies (Teaching AIDS and Multimedia Power Points) and Learning Style on Mathematics Learning Outcomes
Full text linkThis study aims to determine the effect of STAD learning strategies assisted by teaching aids and multimedia assisted PowerPoint with auditory and kinesthetic learning styles on mathematics learning outcomes. Sampling was chosen randomly (random class). This type of research used quasi-experimental with a 2x2 factorial research design. The instruments use a test of learning outcomes in the form of multiple-choice questions and a questionnaire for student learning styles. Data were analyzed using two-way ANOVA and multiple comparison tests. Based on the data analysis, it is concluded that: (1) there are differences in the mathematics learning outcomes of students in classes who receive STAD learning assisted by teaching aids between STAD learning assisted by multimedia PowerPoint (2) there are differences in learning outcomes between students with auditory and kinesthetic learning styles students with audio learning styles, student mathematics learning outcomes are not higher when taught with STAD learning assisted by PowerPoint multimedia compared to STAD learning assisted by teaching aids (4) For students with kinesthetic learning styles student mathematics learning outcomes are higher when taught with STAD learning assisted by teaching aid, compared to PowerPoint multimedia-assisted STAD learning and (5) there is an interaction between STAD learning strategies and auditory and kinesthetic learning styles. Therefore, it is concluded that with there is an interaction between learning strategies and learning styles, student learning outcomes are not only influenced by learning strategies. In this case, the STAD learning strategy assisted with teaching aids and STAD assisted with multimedia PowerPoint is not the only factor in making students understand mathematical concepts but must be based on learning styles. For auditory student learning styles, the appropriate learning strategy is to use STAD assisted by Power Point multimedia, while for students who have a kinesthetic learning style using STAD assisted by teaching aids
Growing Student Characters Through Inquiry-Based Science Practicum Module
Full text linkThis study aims to determine how the application of inquiry-based science practicum modules to student character. The method used in this research is experimental in the form of a pre-experimental design. The population of this research is the Adventist Junior High School in Singkawang, West Kalimantan. Through the saturated sampling technique, it is known that class VII A is the class used as the experimental class. To find out the student's character, a student character questionnaire was used. This research was conducted during the Covid 19 pandemic so that the learning process was carried out online. Based on the results of data analysis, it is known that in general, the character of students includes honest, hard work, thoroughness and carefulness, creativity, caring for the environment is classified as good
THE IMPLEMENTATION OF PROBLEM POSING WITH FERRIS WHEEL HYDROLYSIS TO IMPROVE SCIENCE PROCESS SKILLS
Full text linkThis study aims to determine the students’ science process skills towards Salt Hydrolysis material in class XI IPA of SMA Katolik Talino Ambawang before and after being given the problem-posing learning model by using Ferris wheel hydrolysis and how much it improves the skills. It is a pre-experimental study with a one-group pretest-posttest design. The sampling technique used is saturated sampling, of which the subjects are 12 students of XI IPA. The normality test used on the pretest and posttest results is the Shapiro-Wilk test, which results in a normal distribution, Asymp.Sig. (2-tailed) greater than 0,05 with a significance pretest of 0,197 and postest of 0,547. The t-test results of the pairing sample indicate that the Asymp. Sig. (2-tailed) value is less than 0.05, which is 0,000 < 0.05. It was concluded that there is a difference between the students’ science process before and after the treatment. The mean scores of the students’ skills before and after the treatment are respectively 45,69% and 82,36%, with a high category. The value of 0,68 from the N-Gain calculation showed that the problem-posing learning model using Ferris wheel hydrolysis on Salt Hydrolysis material improved the students’ skills with the medium category.
3D structure of NT-3 Protein (Neurotropin 3) of Pigeon (Columba livia) using Server-Swiss Model
Full text linkThe NT-3 protein plays an important role in the development and differentiation of neurons, and is unique in the neurotropin family, that it can bind to 3 Trk receptors, namely TrkC, TrkA and TrkB. This study aimed to analyze the characteristics and three-dimensional structure of NT-3 protein in Columba livia. The target protein was obtained from Uniprot server with the access code of PKK30025.1 using template 3buk.1A (PDB-ID) analyzed in-silico through homology method using SWISS-MODEL server. The results showed that the three-dimensional structure of the target NT-3 protein with a template formed a β-sheet and loop structure, which was composed of 304 amino acids, with the highest amino acid composition was serine at 8.88 mol polar, and the lowest amino acid was tryptophan at 1.32. moles which was relatively nonpolar. The analysis results of the structural quality revealed an identity value of 98.20%, QMEAN of 0.8, QMQE of 0.25, and the analysis on the Ramachandran plot presented an outlier value of 0.92%; the most favored region value was 94.5%, with good structural quality. The results of the 3-dimensional structure of the NT-3 Columba livia protein are expected to be useful for further research to determine the active side and interactions of proteins in carrying out their functions