This study is developmental research that aims to determine how the use of science diorama media on food chain material Class V SDN Ellak Laok IV and find out how students respond to this research. Subjects in this study are students of Grade V SDN Ellak Laok IV with a total of 6 students. Data collection techniques in this study in the form of preliminary observations, and questionnaires/questionnaires. The procedures of this research are (1) potential and problems; (2) collecting information; (3) Product Design; (4) design validation; (5) design improvement; (6) product testing (7) product revision. The results of product validation include Media Design Validation with a percentage of assessment of 94% with criteria once and without revision, while the material validation with a percentage of assessment of 96% with criteria once and without revision. The results of the assessment of students ' response to the development of media diorama science categories were very good. This is evidenced by the value of the results of the student response questionnaire with an assessment of 95% and very good criteria. So that the development of Science diorama media is worthy of use as a learning medium. The results of data analysis in the form of Shiva's response to this development by 95%. So it can be concluded that the response of students to the development of science diorama media on food chain material of Class V SDN Ellak Laok IV is very good.
In the era of the industrial revolution 4.0, modern technology such as fibre technology and integrated network systems in all aspects of life has made humans very dependent on technology. The purpose of this research is to foster a culture of digital literacy in the school environment, increase teacher knowledge and skills in the field of developing and utilizing digital teaching materials, improve student learning performance and increase teacher knowledge and skills in terms of digital learning models and improve student's learning performance. The method used in this study is the observation method using the pre-experimental design method, one group type pretest-posttest (pretest test-posttest single group). Assistance was provided to 28 junior high school teachers in the South Tangerang area. During the training, participants were given four assignments: Team, Sway, Learning Design and Learning Videos. The study results show that as many as 71% of teachers have mastered the Teams and Sway applications from Microsoft, 60% can make lesson plans, and 53% can make learning videos. The pretest and post-test results showed that the average result was 36.6%, then after participating in the training, the average result was 44.4%. The results of the study show that training in the development and use of digital teaching materials has an effect on the skills and abilities of teachers, which is beneficial for improving student learning performance.
This study explored adsorptive property of ceria nanocrystal as an adsorbent for amoxicillin removal from water. Ceria nanocrystal was synthesized by employing precipitation method and characterized by using XRD and N2 adsorption-desorption analysis. The adsorption experiment was performed by managing amoxicillin in natural condition. Then, parameters in the adsorption experiment, such as adsorbent dosage, contact time, temperature and initial concentration of amoxicillin are varied. The XRD pattern illustrated that the average crystallite size of ceria nanocrystal formation was 13.08 nm. N2 adsorption-desorption analysis showed that ceria nanocrystal was mesoporous with specific surface area of 65.26 m2/g. The amoxicillin adsorption of ceria nanocrystal adsorbent was described by Langmuir isotherm model with maximum adsorption capacity of 37.17 mg/g. The adsorption kinetic of ceria nanocrystal corresponded to the pseudo-second order model. Removal efficiency of amoxicillin by ceria nanocrystal was approximately 80% within 60 minutes over temperature range 303-323K. Those parameter results are described that ceria nanocrystal adsorbent is feasible as a rapid amoxicillin removal from water.
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