Scientific literacy is very important to generation Z (Gen-Z), while Gen-z’s scientific literacy in Indonesia needs to be improved. The use of gadgets by Gen-Z almost all the time in their daily lives enables research to improve scientific literacy by using gadgets. This study aims to determine the effectiveness of gadget-based interactive multimedia to improve Gen-Z scientific literacy and describe the Gen-Z response to interactive multimedia. This research was a pre-experiment study with one group pretest and posttest design. Interactive multimedia was designed to be applied on gadget, consists of Socioscientific Issues (SSI) which was relevant to pressure concepts. This research involved two junior high schools in East Java, Indonesia. Scientific literacy test instrument was designed based on scientific literacy aspects of PISA 2015. The inferential test results showed that posttest score was significantly greater than the pretest in the two schools. Results showed that the mean score of students’ scientific literacy at School I increased from 39.6 to 74.0 and N-gain score was 0.57 which was in medium category. In addition, the average scientific literacy score of students in School II also increased from 31.5 to 59.9 and Ngain score was 0.41 which was in the medium category. The inferential test results also showed that there were no significant N-gain differences in the two schools. It can be concluded that interactive multimedia developed effective to improve students’ scientific literacy. However, Gen-Z students cannot be satisfied with the multimedia. Students suggest several multimedia enhancements in terms of visual, audio, and music, so that they can enjoy the multimedia all the time by using the device. 

Optical wave courses at the Department of Science discuss waves and optics. The purpose of this study is to describe the problem-solving ability of students in optical wave courses. The method used is quantitative descriptive with one group pre-test post-test design. Method of data collection involves a test given to students before and after the student worksheet was provided in the course of optical waves. This study showed an increase in scores experienced by as many as 15 students. This shows that the problem-solving ability of students has increased.

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This study aims to determine teachers’ ability to address science from socio-scientific issues (SSI) as predictors of scientific literacy that consider as a black box in schools. A total of 25 junior high school science teachers in some areas of East Java volunteered to be involved in this survey. Data collected by addressing macroscopic issues (AMI) tests and questionnaires were analyzed descriptively through content analysis and percentage. The results indicate that science teachers generally have difficulty in addressing science from SSI. The authentication worksheet shows that almost all AMI that can be addressed only reaches 50% maximum. Less than 50% of science teachers have heard of scientific literacy but have not been able to describe it. The implication, the student may not become a scientifically literate person if teachers are not scientifically literate, and SSI is not involved in the learning process.

Yacon tubers contain various bioactive including flavonoids and phenolic compounds, having antioksidant properties. The aim of the study was to obtain the effect of using natural inhibitors on the antioxidant activity of yacon tubers syrup. Phytochemical tests are used in the determination of flavonoids, phenolic content and antioxidant activity. Total content of phenol and flavonoid were measured by spectrophotometry, while the antioxidant activity was measured by DPPH method. The results showed that the use of natural inhibitors affects the antioxidant activity of yacon tuber syrup. The content of flavonoids and phenolic compounds in yacon syrup using natural inhibitors were 148.093±3.973 and 1244.595±67.672 ppm, significantly different from yacon syrup without inhibitors 100.923±9.277 and 978.912±54.223ppm. Antioxidant activity of syrup with natural inhibitors were 52.888% and IC50: 6.383, while yacon syrup without inhibitors were 24.388% and IC50: 11.180.

Reproductive performance of female cattle is one of the important factors that need to be known in supporting the efficiency of beef cattle breeding programs so that the dam can produce calves every year. This study aimed to evaluate the potential and reproductive performance of female Bali cattle to preparing a baseline for cattle breeding production in SL-SPR Maju Bersama, Sungai Lilin District. Three hundred and thirty female Bali cattle owned by 247 farmers were measured and recorded based on their production and reproduction performance. Data were collected by interview and observation. Data were analyzed using statistical and descriptive methods. Reproductive performance obtained is the age first calving 1098±120 days; calving interval 457,25±8,75 days; days open 109,25±8,57 days and service per conception 5,46±0,42. The average female cattle have a BCS value of 3 (43%). The result showed that the breeding of Bali cattle at SL-SPR had sufficient potential, but it was necessary to improve performance. The basic data obtained can be used to start a breeding business to increase populations and improve the genetic quality of Bali cattle.

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Penelitian ini bertujuan untuk mengembangkan Lembar Kerja Mahasiswa (LKM) Dasar-dasar IPA yang diharapkan dapat membekali mahasiswa calon guru IPA dengan keterampilan proses sains sekaligus nilai-nilai positif melalui pendidikan karakter. Pendidikan karakter ini dianggap perlu karena maraknya konflik-konflik intoleransi dan keadilan sosial yang terjadi di masyarakat akhi-akhir ini. Hal ini menunjukkan bahwa nilai-nilai integritas bangsa Indonesia perlu mendapatkan perhatian, terutama dalam hal etika, moral, dan kepercayaan. Pentingnya nilai-nilai ini karena semangat gotong royong dan saling bekerjasama merupakan karakter Bangsa Indonesia. LKM yang dikembangkan melalui tahapan perancangan, penyusunan, validasi, dan revisi sehingga dihasilkan produk LKM Dasar-dasar IPA berbasis model ALLR (Activity Based-Lesson Learn-Reflection). Hasil pengembangan LKM menghasilkan empat kegiatan LKM yang dibagi menurut topik pembahasan yang berbeda-beda dengan menggunakan serangkaian aktivitas yang diharapkan dapat meningkatkan keterampilan proses sains. Selain itu, LKM juga dirancang untuk pengintegrasikan pendidikan melalui pembelajaran pemaknaan konten-konten IPA ke dalam nilai-nilai positif yang berkaitan dengan nilai toleransi dan keadilan sosial. Hasil validasi menunjukkan bahwa LKM Dasar-dasar IPA layak digunakan dengan nilai presentase validasi LKM 1 sebesar 76.79%, LKM 2 sebesar 82.14%, LKM 3 sebesar 92.85%, dan LKM 4 sebesar 76.78%.