Latar belakang masalah dalam penelitian ini adalah rendahnya hasil belajar siswa kelas VI pada pembelajaran Matematika materi konsep lingkaran. Faktor-faktor yang menyebabkan hasil belajar Matematika masih rendah salah satunya adalah masih kurangnya penggunaan bahan ajar yang menarik dan menunjang proses pembelajaran. Tujuan penelitian ini adalah menganalisis efektivitas bahan ajar Matematika e-modul interaktif berbasis android untuk meningkatkan pemahaman konsep lingkaran kelas VI Sekolah Dasar di Kabupaten Demak. Teknik pengumpulan data yang digunakan adalah observasi, angket dan tes tetulis. Instrumen penelitian berupa tes. Sampel penelitian ini dilakukan dengan purpose sampling. Analisis data meliputi deskripsi data, uji prasyarat analisis, dan uji hipotesis dengan menggunakan uji t. Hasil penelitian adalah bahan ajar Matematika e-modul interaktif berbasis android cukup efektif untuk meningkatkan pemahaman konsep lingkaran kelas VI tentang konsep lingkaran dengan nilai t-hitung 30,926 sedangkan t-tabel sebesar 1,9765 maka t-hitung > t-tabel atau 30.926 > 1,9765.
Dendrophthoe pentandra is a plant parasite that can be detrimental to the host plant and attacks various types of trees, such as acacia. The purpose of this study was to examine the effects and determine the concentration of acacia parasite filtrate on bagworms. This research was an experimental study which used 0%, 20%, 40%, 60%, 80%, and 100% parasite filtrate concentrations. The study employed the Completely Randomized Design method with ANOVA as the method of analysis. Based on the results of phytochemical tests, the parasite filtrate contained alkaloids, flavonoids, saponins, triterpenoids, phenolics, and tannins. The ANOVA test results showed that the concentration of acacia parasite filtrate affected the mortality of the bagworms. Furthermore, based on Duncan's test, the most effective concentrations to be applied were 80%, 60%, and 100%.
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