The research conducted was a research on media development in the form of electronic module in mathematics learning using a STEM-Collaborative Project Based Learning model which is believed to improve the mathematical literacy skills of vocational high school students. The test subjects in this study were students of Vocational High School 1 Panji Situbondo where the data analysis technique used in this development research was descriptive analysis techniques. The quantitative data that had been obtained from the Likert scale measurement were converted based on the weighted score that has been determined. This data is quantitative data which were further analyzed by descriptive statistics. The scores obtained from the questionnaire were then converted so that the eligibility percentage was known and the conclusion that the e-module developed was valid, practical and efficient. The benefit that could be obtained from this research was the contribution of thoughts to improve the quality of education, especially in mathematics learning by presenting new insights regarding the preparation of learning tools in the form of e-modules as an alternative to learning media for mathematics to improve the quality of the learning process.

This study aims to preparation, identify the content, and determine the type of iron oxide on the magnetic material from Iron Sand Lansilowo. Magnetic material is separated from iron sand using an external magnet. Magnetic material washes by using aquadest and dried at 80 °C. Materials were characterized by X-Ray fluorescence (XRF), Fourier Transform Infrared (FT-IR) spectrophotometer, X-ray diffractometer (XRD) and Transmission electron microscope (TEM). The results show that the magnetic material of iron sand Lansilowo contains elements of Fe (46.13%), the element Cr (28.08%), Mg (10,11%), Si (8.20%) and other minor elements. Iron oxide contained in iron sand Lansilowo is dominated by magnetite iron oxide (Fe 3 O 4 ). The results of characterization show that the magnetic material of iron

Buah leunca (Solanum nigrum L) merupakan tanaman dari suku solanaceae yang dipercaya dapat mengatasi kanker. Leunca yang termasuk jenis buah dapat diawetkan dengan cara iradiasi gamma. Penelitian ini dilakukan untuk mempelajari pengaruh perlakuan dosis iradiasi gamma terhadap buah leunca dan efeknya terhadap khasiat anti kanker leukemia L1210. Dosis iradiasi yang diberikan adalah 5; 7,5; 10; dan 15 kGy, masing-masing dengan 2 ulangan. Ekstraksi dilakukan secara bertahap dengan n-heksan, etil asetat, dan etanol. Fraksi aktif dari etil asetat saja yang diuji sitotoksiknya. Hasil menunjukkan bahwa dosis iradiasi maksimum dengan sumber gamma 60Co untuk buah leunca adalah sebesar 7,5 kGy dengan tidak merusak khasiatnya sebagai anti kankerKata kunci : Solanum nigrum L, Sel kanker L 1210, Iradiasi gamma, Sitotoksik

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh inflasi, tingkat suku bunga, dan nilai tukar terhadap pertumbuhan ekonomi Indonesia tahun 1996 sampai dengan tahun 2016. Metode penelitian menggunakan analisis regresi dan korelasi berganda. Hasil penelitian menunjukkan bahwa secara parsial maupun secara simultan variabel inflasi, tingkat suku bunga, dan nilai tukar berpengaruh signifikan terhadap pertumbuhan ekonomi. Besarnya nilai koefisien korelasi (R) sebesar 0,926 yang berarti menunjukkan adanya korelasi/hubungan yang sangat kuat antara inflasi, tingkat suku bunga, dan nilai tukar terhadap pertumbuhan ekonomi Indonesia. Besarnya nilai adjusted coeficient of determination (adjusted R2) adalah 0,831 atau 83,1% yang berarti variabel-variabel bebas dapat menerangkan perubahan pada variabel pertumbuhan ekonomi sebesar 83,1% sedangkan sisanya sebesar 16,9% diterangkan oleh faktor-faktor lain diluar penelitian ini.

AbstrakNilai-nilai kepahlawanan merupakan representasi nilai sikap yang harusnya didapati siswa dalam pembelajaran sejarah. Konten buku paket sejarah di Sekolah belum memberikan porsi cukup guna pembahasan mengenai tokoh kepahlawanan. Kompleksitas dan monotonnya buku ajar sejarah memberi sumbangsih pada minimnya minat belajar siswa. Era digitalisasi visual setidaknya menjadi sebuah tantangan yang harus direspon demi mengembangkan konten pembelajaran yang inovatif. Konten pembelajaran sejarah merupakan salah satu ranah kognitif yang harus mampu diserap siswa secara maksimal, sehingga perlu adanya metode maupun media agar konten tersebut terserap secara maksimal. Metode yang digunakan dalam penelitian ini adalah metode pengembangan atau Research and Development dengan mengacu pada model perancangan ADDIE (Analyze, Design, Development, Implementation and Evaluation). Metode pengambilan data lapangan didapat dari hasil wawancara dan observasi pada analisis kebutuhan. Pre test dan post test digunakan untuk mendapatkan data prestasi belajar dan kesadaran sejarah siswa. Penilaian yang diberikan oleh para ahli dapat disimpulkan bahwa bahan ajar sejarah biografi pahlawan dinyatakan layak untuk diterapkan dalam pembelajaran sejarah, dan terdapat perbedaan tingkat kesadaran sejarah antara kelas yang tidak menggunakan bahan ajar biografi pahlawan sejarah berbasis infografis dengan yang menerapkannya. Kata Kunci: bahan ajar, biografi, infografis, pahlawan AbstractHeroes values are the representation of attitude that students must acquire in learning history. The history book content in the school has not provided enough portion for the discussion about heroism. The complexity of history textbooks has an impact on students' decreased interest in learning. The era of visual digitalization is a challenge that must be responded to develop innovative learning content. Historical learning content is a cognitive domain that students must be able to receive optimally, so there is a need for methods and media to solve it. The method used in this research is the Research and Development method with reference to the ADDIE design model (Analyze, Design, Development, Implementation, and Evaluation). Needs analysis obtained by using interview and observation methods. Pretest and posttest were used to obtain data on student achievement and historical awareness. Conclusion The assessment given by experts that the historical teaching material of the hero biography is declared deserve to be applied in historical learning, and also there are differences in the level of historical awareness between classes that do not use teaching materials based on infographic historical heroes with those who apply them.  Keywords: biography, handout, heroism, infographic

Security is the main challenge in Internet of Things (IoT) systems. The devices on the IoT networks are very heterogeneous, many of them have limited resources, and they are connected globally, which makes the IoT much more challenging to secure than other types of networks. Denial of service (DoS) is the most popular method used to attack IoT networks, either by flooding services or crashing services. Intrusion detection system (IDS) is one of countermeasures for DoS attack. Unfortunately, the existing IDSs are still suffering from detection accuracy problem due to difficulty of recognizing features of the DoS attacks. Thus, we need to determine specific features that representing well the traffic attacks, so the IDS will be able to distinguish normal traffic from the attacks. In this work, we investigate ping flood attack pattern recognition on IoT networks. Experiments were conducted using wireless communication with three different scenarios: normal traffic, attack traffic, and combined normal-attack traffic. Each scenario created an associated dataset. The datasets were then grouped into two clusters: normal and attack. The K-Means algorithm was used to produce the clustering results. The average number of packets in the attack cluster was 95 931 packets, and the average in the normal cluster was 4,068 packets. The accuracy level of the clustering results was calculated using a confusion matrix. The accuracy of the clustering using the implemented K-Means algorithm was 99.94%. The rates from the confusion matrix were true negative (98.62%), true positive (100.00%), false negative (0.00%), and false positive (1.38%).INDEX TERMS Internet of Things (IoT), pattern recognition, ping flood, K-means, clustering.

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This study aims to analyze and describe the musical activity in the process of learning music through children songs in primary school. A qualitative approach in this research is made by focusing on the field research method. Data were collected by observation techniques, interviews, and documentation studies. Data analysis was done by following certain stages respectively, i.e. data collection, data reduction, data display, conclusion drawing, and verification. The results showed that musical activities implemented in three primary schools consist of (1) listening to music; (2) singing; (3) playing musical instruments; (4) moving to follow the music; and (5) reading music. However, forms, types, and variations of the musical activities taking place in these schools are different, depending on the schools’ policy, schools’ abilities, and music teachers’ abilities in teaching the music subject.