Belajar matematika menjadi momok tersendiri bagi siswa. Untuk itu diperlukan suatu metode supaya pembelajaran matematika menjadi sesuatu yang menyenangkan bagi siswa sehingga kedepannya kesan sulit pada pelajaran matematika dapat dihapus. Salah satu cara yang dapat dilakukan adalah dengan mengajak mereka belajar matematika sambil bermain. KARTIKA (Kartu Matematika) dirancang sebagai salah satu media pembelajaran matematika yang dikemas melalui permainan edukatif. Sasaran dari KARTIKA adalah siswa sekolah dasar kelas 4 dan 5. Permainan ini diterapkan pada siswa SD Islam Pangeran Diponegoro. KARTIKA adalah mainan kartu layaknya kartu bridge (kartu remi), perbedaan KARTIKA dengan kartu bridge adalah cara penomoran kartunya. Dalam KARTIKA setiap kartu berisikan operasi hitung yang disesuaikan dengan materi pembelajaran siswa sekolah dasar. Dimana jawaban dari operasi hitung itu adalah angka 1 sampai dengan 13. Sehingga untuk bisa bermain, siswa dituntut untuk bisa menyelesaikan operasi hitung yang ada di dalam kartu. Metode ini cukup efektif untuk mengajak anak belajar matematika. Karena pada pembelajaran matematika dengan media KARTIKA, anak menganggap dirinya sedang bermain, namun pikiran mereka tetap dijalankan untuk memecahkan operasi hitung yang ada pada kartu.

This study aims to improve cognitive learning outcomes, critical thinking skills, and determine students' responses to the STAD type cooperative model with the concept map media. The study uses a Pre Test Post Test Comparation Group Quation Experiment Design. The sampling technique using Cluster Random Sampling, obtained 2 sample classes namely control class 32 experimental class 32. Data collection techniques using questionnaires, documentation, and tests. The research instrument was tested for validity and reliability. The data analysis technique uses Independent Sample T Test. The results showed a significant difference from the critical thinking skills and learning outcomes, namely the average value of the Post Test critical thinking ability of the experimental class 74.94 higher than the average value of the Post Test control class 65.78 and the average value of the Post Test learning outcomes cognitive experimental class 82.97 higher than the average value of the control class Post Test 66.75. There is an increase in the average N-Gain critical thinking of the experimental class 0.47 the moderate category is greater than the control class 0.2 the low category, while the cognitive learning outcomes of the experimental class 0.65 the medium category is greater than the control class 0.29 the low category. The results of students 'responses differed significantly between the experimental class and the control class, where the STAD learning model with concept maps can improve cognitive learning outcomes and students' critical thinking abilities.

Dayak Ngaju community especially in three villages, which are Tumbang Muroi, Tumbang Mangkutub, and Katimpun in Mantangai Sub-district, Kapuas Regency, Central Kalimantan has used environment unit as a place to fulfill the community’s daily needs. The perception of the community towards each landscape unit utilization has been held in July 2018. The result of classification and utilization of the landscape unit is a belief and trust of the people which is able to influence the perception of the community towards sustainable utilization and management of the environment. Thus, this research provides explanation about utilization, development, and management based on Dayak Ngaju community norm in order to sustainably conserve the natural resources in the future.

The purpose of this study is to determine the difference in returns on the JCI or stock mutual funds returns and to find out how well the performance of the four stock mutual funds is in the conclusion that there is a difference or not in the consistency of the performance of stock mutual funds. In this study, the Mutual Fund Performance Evaluation Method used includes the Sharpe Ratio, Treynor Ratio, Jensen Alpha, and M-Square. The population in this study is equity mutual funds registered with the Financial Services Authority (OJK) for the 2016-2018 period. The results of the study based on the Wilcoxon signed rank test showed that there was a significant difference between stock mutual fund returns and JCI returns. Meanwhile, based on the Kruskal-Wallis test, it shows that there are differences in the consistency of the calculation of the Sharpe Ratio, Treynor Ratio, Jensen Alpha, and M-Square methods.