Jurnal Visi Eksakta

PERBEDAAN MODEL PEMBELAJARAN PBL DAN MODEL PEMBELAJARAN PBI TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIKA SISWA PADA MATERI SPLTV KELAS X SMA NEGERI 8 MEDAN T.P 2019/2020

Dina Kristina Enjelina — 2025-06-17

This research is a quasi-experimental type of research. Population is the whole object in which there are subjects that can be used as a source of data that is expected to provide the data needed by researchers. The population in this study were X MIA class students at SMA Negeri 8 Medan. The technique that will be used in this sampling is using Purpossive sampling technique. The purpose of pseudo research is to obtain information that is an approximation for information that can be obtained with actual experiments in circumstances where it is impossible to control and manipulate all relevant variables. The results showed that the design of the learning model that had been designed was good to use. From the calculation obtained tcount = 1.71 and ttable = 1.670 It turns out that tcount = 1.71> ttable = 1.670 so that Ha is accepted or H0 is accepted, it can be concluded that the final ability of students taught using PBI learning model is better than students taught with PBL learning model on students' mathematical communication skills.

THE EFFECT OF FERMANTATION OF BANANA KEPOK MUSA SP) FLOUR WITH YEAST TEMPE IN RATIONS ON CUT WEIGTH, CARCASS WEIGTH AND PERCENTAGE OF CARCASS OF LOCAL AGED MALE 11 WEEK

Magdalena Siregar — 2025-06-17

This study aims to determine the effect of fermented kepok banana peel flour (Musa sp) with tempe yeast in the ration on slaughter weight, carcass weight and carcass percentage of local male ducks aged 11 weeks. This research was conducted in the experimental field of the Faculty of Animal Husbandry, HKBP Nommensen University in Simalingkar A Village, Medan Tuntungan District for 11 weeks. This study used 100 male local ducks. The research method used is an experimental method using a completely randomized design (CRD), consisting of 4 treatments and 5 replications, namely P0 (0% fermented kepok banana peel flour), P1 (5% fermented kepok banana peel flour), P2 (10% fermented kepok banana peel flour) and P3 (15% fermented kepok banana peel flour). The data obtained in this study were analyzed for variance (ANOVA) and then continued with the Honest Significant Difference (BNJ) test. The conclusion obtained from the results of the study showed that the provision of fermented kepok banana peel flour in the ration of male local ducks aged 11 weeks had a very significant effect (P<0.01) on slaughter weight and carcass weight, while the percentage of male local duck carcasses showed no significant difference. (P>0.05). Fermented kepok banana peel flour can be used a maximum of 10% in the ration of male local ducks.

EFEKTIVITAS MODEL PEMBELAJARAN THINK PAIR SHARE (TPS) TERHADAP KEMAMPUAN PEMAHAMAN KONSEP DAN PEMECAHAN MASALAH PADA MATERI GEOMETRI DERAJAT DAN RADIAN DI KELAS X SMA NEGERI 2 DOLOK SANGGUL TP. 2019/2020

Enita Octalia Siregar — 2025-06-18

This research is a quasi experimental research. This study aims to see if there is an effect of Think Pair Share Learning Model on concept understanding and problem solving skills. The population in this study were all X grade students of SMA Negeri 2 Doloksanggul, which amounted to 6 classes in the 2019/2020 school year. In this study, the independent variable ( ) is the TPS learning model on degree and radian material. the coefficient of determination from the calculation results = 61.2%. Based on the results of the calculation of the correlation coefficient significance test, it is obtained thitung > ttabel or 0.779> 0.349 which means that there is a strong relationship between the Think Pair Share learning model on the ability to understand concepts and problem solving obtained thitung > ttabel or 0.782> 0.349 which means that there is a strong relationship between the Think Pair Share learning model on problem solving. From the results of this discussion, the hypothesis in this study is accepted, namely “There is an Effect of the Think Pair Share Learning Model on the Ability of Concept Understanding and Problem Solving on Geometry Material Degrees and Radians in Class X SMA Negeri 2 Doloksanggul T.P. 2019/2020”.

EFEKTIVITAS MODEL PEMBELAJARAN GENIUS LEARNING DENGAN BANTUAN MEDIA POWER POINT TERHADAP KEMAMPUAN PEMAHAMAN KONSEP DAN PEMECAHAN MASALAH MATEMATIKA SISWA PADA MATERI SEGITIGA KELAS VII SMP SWASTA FREE METHODIST 2 MEDAN T.P 2019/2020

Rohani Seplin Siahaan — 2025-06-18

This research includes quasi-experimental research. The experimental research method can be interpreted as a research method used to find the effect of certain treatments on others under controlled conditions (Sugiyono, 2016: 72). This study aims to see whether the Genius Learning model is effective with the help of Power Point media on concept understanding and problem solving skills. The research design uses the one-shot case study. This study involved one experimental class that was given one-time treatment with the Genius Learning model. The population of this study were all VII grade students of SMP Swasta Free Methodist 2 Medan T.P 2019/2020 consisting of 3 classes. The variables in this study consisted of two types, namely independent (independent variable (X)) and dependent (dependent variable (Y)) variables. From the observation data above, the average score of the teacher's ability to teach is 4.167, so by comparing with the average score of the teacher's ability to teach above, it can be concluded that the teacher's ability to teach in this study is in the good category.

GAMBARAN COPING STRESS PADA SISWA SMAN 1 KOTA TEBING TINGGI DALAM MENGHADAPI KEGIATAN BELAJAR PADA PROSES TRANSISI PANDEMI

Yosefine Anggreini Pardosi — 2025-06-18

The decline in infection rates and the health impact of the COVID-19 virus in Indonesia has led to many regulatory changes. One of them is face-to-face learning activities that apply to the SMA Negeri 1 Tebing Tinggi. Learning activities that are again carried out face-to-face trigger stress on students who have been accustomed to doing online learning for 2 year. This study intends to find out how the description of stress coping strategies carried out by students at SMA Negeri 1 Kota Tebing Tinggi. This research is a descriptive study using a questionnaire as a data collection instrument. The statements in the questionnaire are based on the definition of coping stress that has been developed by Lazarus. In this research, it was found that the students of SMA Negeri 1 Kota Tebing Tinggi used the dominant form of coping with emotional stress focused coping and the dominant coping strategy used was self control.