This survey was aimed to assess the student’s difficulties in senior high school for learning particular topics in Biology and the problems in the learning process. The survey was conducted in senior high school all around the Lombok island by using questionnaire and surveyed 568 students and 24 biology teachers which then analyzed by using qualitative and quantitative statistics. This survey revealed the difficult topics are bacteria and viruses (18.64%), endocrine system (10.63%), cell structure (8.81%), genetics (8.41%), and nervous system (8.28%). The student’s major problems in learning the topics are the use of the scientific name, the complexity of the topics, and the students learning habits. The survey also revealed the teacher’s problems in the teaching process in the planning stage (23.27%), implementation stage (48.63%) and evaluation stage (28.10%).
This study aims to develop of learning package 5E model and analyze the effect of its implementation on the differences in student’s critical thinking and arguing skills. Development process follows R & D model by Dick and Carey. Research design follows pretest-posttest nonequivalent control group design. The population of this study was tenth graders of SMA 1 Woha Bima. Total population is 350 students from ten class. The sample was selected by simple random sampling technique and 131 students (four class) is obtained. X1 and X2 class are taught using the 5E models, while the X5 and X9 class with EEK models. Expert judgement results meet the criteria for the development of a very good result with an average value of 3.37. The results of experimental studies showed that: there is a difference in students’ critical thinking in the experimental and control group (t = 3,501, p = 0,001).Keywords: 5E Model, Critical Thinking Skills
Exploration of plant adaptives using descriptive method was conducted at the area of ferro-nickel post mining land of PT. Antam (Persero) Tbk Pomalaa, Southeast Sulawesi Indonesia. The purpose of exploration was to identify the native plant which could be adaptable in that area and to determine the concentration of heavy metals which could be dominant in soil and plant. The area of exploration was chosen in that area with or without removing overburden. The species of native plants were identified and the concentartions of nickel (Ni), iron (Fe), cobalt (Co) and lead (Pb) in soil and plant tissues were measured. Results showed that there were five species of endogen adaptive plants found such as Scleria lithosperma (Linnaeus) Swartz, Machaerina glomerata (Gaudich) T. Koyama, Trema cannabina Lour., Alstonia macrophylla Wall Ex G. Don, and Scleria purpurascens L. The five species plants were tolerated for heavy metals concentration in the range of 735.18-752.99 mg/L for Ni, 0.398-2.139 mg/L for Fe, 0.463-1.100 mg/L for Co and 0.111-0.147 mg/L for Pb. Scleria lithosperma, Machaerina glomerata, Trema cannabinaand Alstonia macrophyllawere categorized as the phytoextraction plants.
Tujuan penelitian ini adalah untuk mengetahui kemampuan tanaman hias Lidah mertua (Sanseviera trifasciata.sp), Puring (Codiaeum variegatum), Palem Kuning (Chrysalidocarpus lutecsens), dalam menyerap timbal (Pb). Penelitian ini merupakan penelitian deskriftif eksploratif dengan desain penelitian Rancangan Acak Lengkap (RAL) dengan 9 kali perlakuan dan 3 kali pengulangan. Subjek penelitian adalah lidah mertua (Sanseviera trifasciata.sp) Puring (codiaeum variegatum) dan Palem Kuning (Chrysalidocarpus lutecsens), objek penelitian adalah pengukuran konsentrasi timbal (Pb) pada daun. Data dianalisis secara kuantitatif dan kualitatif. Pengumpulan data kuantitatif diperoleh dengan menghitung konsentrasi timbal (Pb) tanaman hias: lidah mertua (Sanseviera trifasciata.sp), Puring (codiaeum variegatum) dan Palem Kuning (Chrysalidocarpus lutecsens) menggunakan uji AAS (Atomic Absorption Spectrophotometer). Berdasarkan penelitian diperoleh selisih kemampuan tanaman menyerap timbal (Pb) sebelum dan sesudah pemaparan tanaman lidah mertua (Sanseviera trifasciata.sp ): 0,06 ppm; 0,1 ppm; 0,15, tanaman puring (codiaeum variegatum): 0,04 ppm; 0,09 ppm; 0,2 ppm serta tanaman palem kuning (Chrysalidocarpus lutecsens): 0,02 ppm; 0,04 ppm; 0,11 ppm
Literary ecology in the Bungo Fish legend discusses the relationship between humans and nature and vice versa. To create a balance, awareness is needed in managing, preserving and maintaining local wisdom, which is beginning to erode due to human unpreparedness in facing technological developments. The problems in literary works, especially the Bungo Fish legend originating from Sumpabaka in Wajo Regency, are based on several reasons. First, there is a relationship between living things and their environment experienced by the main character, namely Topanggalung and Bungo Fish. Second, the local colour is very thick in the legend of Bungo Fish, which is that the people who come from Sumpabaka do not consume Bungo Fish. Third, the problem of literary ecology in the Bungo Fish legend, if examined carefully, is social criticism of real life that does not pay attention to nature. This study discusses the reciprocal relationship between humans (characters) and nature based on literary ecology based on the problems above. This study describes the literary ecology related to the reciprocal relationship between humans and nature in the Bungo Fish legend. The method used in this research was a literature study that specifically examined the text on the Bungo Fish legend. The collected data analyzed by analytic descriptive and data analysis techniques. The results of research related to the reciprocal relationship between humans and nature include human responsibility towards nature, living in harmony with nature, being fair with nature, upholding democracy with nature, and moral integrity.
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