Tujuan Penelitian ini untuk menguji Efek Mediasi Literasi keuangan Terhadap hubungan antara kualitas pembelajaran keuangan dengan keputusan investasi.Metode penelitian ini menggunakan pendekatan penelitian kuantitatif, bersifat deskriptif verifikatif. Sampel penelitian ini sebanyak 93 maasiswa yang telah mengikuti literasi keuangan, teknik sampling menggunakan purposive simple random sampling. Untuk menguji Efek Mediasi menggunakan Bootstrapping approach dengan bantuan SPSS versi 25 dan Process V3.4.Hasil penelitian menunjukkan bahwa bahwa Literasi Keuangan (LK) memediasi secara penuh pengaruh Kualitas Pembelajaran Keuangan (KPK) terhadap Keputusan Investasi (KI). Pentingnya meningkatkan literasi keuangan (LK) melalui pembelajaran keuangan pada lingkungan perguruan tinggi, sehingga diharapkan dapat melakukan pengelolaan konsumsi, simpanan, dan perencanaan keuangan dengan baik yang pada akhirnya akan tercipta kesejahteraan hidupnya, hal ini menjadi pendorong bagi kemajuan pembangunan ekonomi.

Abstract-The objective of this study is to measure the purification and characterization of the quality of quartz sand from Pasir Putih village, South Pamona district. The purification was done to increase the pureness of the silica by soaking the sample with HCl 2M then was titrated using aqueous to reach the pH of 7 (neutral). The sample was characterized using the XRF and XRD. Moreover, the element content of SiO2 (Silica) after the purification based on the results of the analysis was 99,88%. Therefore, the element can be used as the raw material for solar cell. Matching the result of the XRD analysis with the software Search Match shows that the purification of the sample SiO2 contains the crystal trigonal system (Hexagonal axes) with the orientation field.

Nano crystal TiO2 was synthesized by modifying the TiO2 powder (Merck). The powder of TiO2 was stirred in 1M HCl solution for 2 hours, and then added ammonia solution (NH4OH). The suspension of TiO2 is spread evenly over the substrate glass and then heated to a different temperature. The structure and optical properties of TiO2 layer were examined using XRD to see the TiO2 crystal structure and size in heating temperature threatment. The optical properties of TiO2 observation showing the absorption band edge shifted to the shorter wavelength, it means the energy of band gap increases to heating temperature.

It has been done research about a nanoparticle magnetic distribution into seeds of Vigna radiata L. seeds and the growth of their sprouts including their roots and stems using the soaking method. their nanoparticle magnetics are the synthesis result of natural iron sands using co-precipitation method. The truth of the nanoparticle magnetic has been shown trough the function of bonding groups at wavenumber 698 cm-1. This research has been done as a foundation for further development in the genetical modification. Next, the experimental results show a good diffusion in the seeds, so that, along the development, the nanoparticle magnetic could be found in the roots and stems. Therefore, this research study is possible to be advanced to control plant growths and their genetical modifications.

This research intends to identify the effectiveness of Science learning through Flash Media and Students' Worksheet using constructivist approach and reviewed by interest, motivation, and learning achievement of primary school students. This is a quasi-experimental research which the dependent variable is learning interest of Science, learning motivation of Science, and learning achievement of Science. Meanwhile, the independent variable is the use of Flash using constructivist approach of experimental class and students' worksheet media using constructivist approach of control class. Subject of this research is 23 students of experimental class and 18 students of control class. Instrument used to collect data consists of: questionnaire of learning interest of Science, questionnaire of learning motivation of Science, and test of learning achievement of Science. Data are analyzed through descriptive statistic technique to describe the interest, motivation, and learning achievement of students on Science, and inferential statistic through t-test on significant level of 5% (α = 0,05). The result of this research revealed that students' interest is 0,0008 (ttest) on significant level of = 0,99; students' motivation is -0.33 (ttest) on significant level of = 0,73; and the result of learning achievement is -0.31 (ttest)on significant level of = 0,75. Therefore, it can be concluded that Science learning through flash media and students' worksheet using constructivist approach is effective to improve interest, motivation, and learning achievement of primary school students.