Jenis penelitian ini merupakan penelitian pengembangan yang bertujuan untuk mengetahui karakteristik, kelayakan dan efektifitas E-modul sistem pernapasan berbasis inkuiri terbimbing untuk meningkatkan kemampuan berpikir kritis siswa. Model pengembangan yang digunakan adalah penelitian dan pengembangan (RND) yang mengacu pada model pengembagan Borg and Gall yang sudah dimodifikasi dan disesuaikan dengan kondisi di lapangan, yang terdiri dari sembilan tahap, yaitu: 1) Research and informating collecting, 2). Planning, 3) develop preliminary form of product, 4) preliminary feed testing, 5) main product revision, 6) main field testing, 7) operational product revision, 8) operational field testing, 9) e-modul final product. Teknik analisis data yang digunakan adalah analisis deskriptif yang digunakan untuk menggambarkan karakteristik e-modul yang akan dikembangkan, analisis kelayakan e-modul berdasarkan skor N-gain yang diperoleh. Hasil uji N-gain skor pada kelas kontrol yaitu 0,65 termasuk dalam kategori sedang, sedangkan untuk kelas eksperimen mendapatkan hasil rata – rata N-gain skor sebesar 0,78 termasuk dalam kategori tinggi. Berdasarkan hasil tersebut, E-modul berbasis inkuiri terbimbing sangat layak untuk digunakan dalam pembelajaran dan terbukti efektif dalam meningkatkan kemampuan berpikir kritis siswa.

The COVID-19 pandemic has caused all fields to face a situation that challenging. critical thinking skills must still be integrated into science learning with the situation because it is one aspect of 21st-century learning. An alternative to reducing face-to-face activities is that schools carry out mixed-system learning. The purpose of this study was to evaluate the integration of critical thinking skills in science learning using a blended learning system in elementary schools given the limitations in learning during the covid-19 pandemic. This research is a case qualitative research with descriptive proportion with a sample of 19 elementary school fifth-grade students. Data collection techniques used are observation, documentation, questionnaires, and interviews. Triangulation of sources and techniques used to validate data. The results showed that critical thinking skills in elementary school science learning using a blended learning system are still relatively low with data (Mo<Md<Me), mean = 14.10, and the largest percentage distribution of 47.37%. The percentage of the majority of the questionnaires answered never with details on the aspects of formulating the problem52.63%, analyze arguments and solve problems 48.42%, evaluate 57.89%. In conclusion, the integration of critical thinking skills with blended learning systems in elementary schools in science learning still needs to be considered because there are still obstacles in its implementation. The results of this study have implications for finding solutions to improve critical thinking skills in science learning with blended learning system learning to be more effective. The recommendation in this study is that teachers are more creative in implementing blended learning system learning strategies for success critical thinking skills in learning science students can be achieved well.

Abstract. Muzzazinah, Suratman, Nurmiyati, Ariani SRD. 2021. Morphological and anatomical characters variation of Indigofera accessions from Java, Indonesia. Biodiversitas 22: 2104-2116. The objective of this research was to evaluate morphological and anatomical character variation of Indigofera accessions from Java, Indonesia. A total of 15 accessions from three species of Indigofera were collected from centers of Batik manufacturing in Java located in the following locations: West Java (Pangandaran), Yogyakarta (Bantul, Kulonprogo), Central Java (Sragen, Sukoharjo, Karanganyar) and East Java (Tuban). There were 14 tested morphological characters based on measurement of vegetative and generative organs. Anatomical characters were observed from paradermal sections and there were 12 tested characters. Analysis of variance was performed for observed morphological and anatomical characters data in order to test the significance of variation among accessions using SPSS software. The characters' mean values then were used to perform principal component analysis and cluster analysis using PAST software. A cluster analysis was conducted by applying an Unweighted Pair Group Method with Arithmetic Averages (UPGMA) in order to group the accessions based on morphological and anatomical character similarity. The analysis of variance for the evaluated morphological and anatomical characters revealed highly significant differences among accessions for all of the tested characters suggesting that there was a high degree of phenotypic diversity among Indigofera accessions. Principal component analysis indicated that the first 2 components accounted for 90.72 % and 88.96 % of the total variation for morphological and anatomical data sets, respectively. Cluster analysis using morphological characters data revealed three main clusters. Four main clusters were then highlighted in cluster analysis of the anatomical character data. The grouping of the accession into clusters showed that there was no correlation between ecological habitat origin and the character diversity expressed among Indigofera accession. However, accessions that came from the same species had the tendency to cluster together.

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Abstract. Fugarasti H, Muzzazinah, Ramli M. 2020. Morphoanatomy of three Indigofera species (Leguminosae-Papilionoideae) in Java Indonesia. Biodiversitas 21: 5531-5538. This study aimed to explore the morphological and detailed anatomical features of the stems, leaves, and roots from three Indonesian Indigofera species. Morphological-anatomical studies of three Indonesian Indigofera species were carried out using embedded microscopic preparations. The anatomical characters of the specimens were observed using a compound optical microscope with magnification 40x, 100x, and 400x. The observation showed the anatomical cross-section of  I. tinctoria stem was rectangular, I. suffruticosa was hexagonal, and I. arrecta was rounded. The tissue structures of Indigofera species, from the outside layer, were the epidermis, thin cortex, secondary phloem (narrow or wide), thick secondary xylem, and conspicuous pith in the middle. Whilst, the corner of I. suffruticosa stem contained thick collenchyma. The vascular bundles were the open collateral. The leaves of Indigofera species are made up of the upper epidermis, mesophyll (palisade parenchyma, spongy parenchyma), and the lower epidermis. The vascular bundles were located in the middle, with five or six segments of the xylem elements and small groups of phloem elements, all in the parallel lines. The primary stele type of the roots is actinostele, cambium activity pushed him aside. The vascular bundle of the roots consisted of a dense and tight secondary xylem composed of thick-walled circular vessels (mostly tightly arranged). Data about the morphoanatomy structure of three Indonesian Indigofera species could complement the novelty of the morpho-anatomy information records obtained by previous researchers.