The aim of the study was to produce a design research method that aims to produce learning trajectories on comparative material based on the Indonesian Realistic Mathematics Approach. Design research through three stages, namely preliminary design, teaching experiment, and retrospective analysis was chosen to achieve the research objectives by designing hypothetical learning trajectory. This alleged learning trajectory was tested on 32 students in grade VII of SMP 30 Palembang. The instruments used in this study were recording devices, written test sheets; field notes sheets and questionnaire sheets. The results showed that a series of activities provided were able to stimulate informal knowledge and explore students’ prerequisite knowledge as a bridge in understanding the comparison of values and turning values. The activity of drawing parts of objects to be intact stimulates students to the knowledge of comparative concepts and to the context of tangram problems students are able to model and represent problems. Furthermore, strategies used by students gradually developed into more formal mathematics where the area model was used as a model of the comparative situation of the tangram and a model for more formal reasoning such as a comparison strategy, in dividing the tangram image, as well as the multiplication of comparisons of values and turns value in solving the problem of completion of a job in the installation of tile / marble floor of the house.
Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite data has been widely employed for many applications. It has fine temporal, spectral and spatial resolution. This feature can be used for monitoring earth condition continuously, such as the rice field distribution. Rice fields can be known by detecting the rice plant in that area. Enhanced Vegetation Index 2 (EVI2) is one of the indexes, which describe vegetation conditions and was employed to mapping the rice field. Rice field area was identified using growth curve recognition of EVI2 MODIS data based on rice plant temporal dynamic characteristics. The rice field distributions in Bali that were estimated from MODIS data in 2009 show reasonable spatial agreement with rice field distribution from land use map of 2008. The total area of rice field from MODIS data is 101,218.75 hectare (accuracy 88.21% of reference data). The southern part of Bali has wider rice coverage compared to northern part of Bali because of the topographic condition in southern Bali is suitable for rice cultivation. The regency and district level comparison of rice field area in Bali Province showed a good spatial agreement of accuracy. This indicates that MODIS EVI2 250 m data can be used to mapping homogeneous areas in the small region of district scale. The accuracy identify rice field are affected by several factors, such as spatial resolution and cloud cover of satellite data, elevation of rice field area, and type of rice field.
Penelitian ini bertujuan untuk mengetahui pengaruh nilai tukar mata uang us dollar dan tingkat suku bunga terhadap harga saham pada perusahaan perbankan yang terdaftar di bursa efek Indonesia. Ada banyak faktor yang mempengaruhi harga saham. Pada penelitian ini, penulis memilih nilai tukar mata uang dan tingkat suku bunga untuk diteliti pengaruhnya terhadap harga saham perusahaan perbankan yang terdaftar di bursa efek Indonesia. Pengambilan data dilakukan dengan menghimpun dan menganalisis data-data yang diambil dari Bank Indonesia dan Bursa Efek Indonesia. Pengolahan data dilakukan dengan menggunakan program SPSS Versi 21, untuk menguji data dengan beberapa uji statistik. Variabel yang digunakan pada penelitian ini terdiri dari variabel dependen, yaitu Harga Saham (Y), dan variable independen, yaitu Nilai Tukar Mata Uang US Dollar (X1), dan Tingkat Suku Bunga (X2). Berdasarkan Uji Determinasi pengaruh kedua variabel tersebut hanya memberikan pengaruh 29,6% terhadap harga saham pada perusahaan perbankan. Berdasarkan hasil uji hipotesis dengan Uji t, menunjukkan bahwa tingkat signifikasi Nilai Tukar Mata Uang US Dollar adalah 0,089 > 0,05, Tingkat Suku Bunga 0,000 < 0,05. Hasil dari penelitian ini dengan uji F adalah NilaiTukar Mata Uang US Dollar dan Tingkat Suku Bunga secara simultan berpengaruh positif signifikan terhadap Harga Saham pada Perusahaan Perbankan yang terdaftar di Bursa Efek Indonesia.
This study aims to produce a Canva-based interactive learning media development product on flat material, which meets the criteria of validity, practicality and effectiveness so that students are able to master the flat material easily. The type of research used is research development or Research and Development. The development model used is ADDIE The subjects of this study were fourth grade students at SD Negeri 80 Palembang. The research data were obtained from validation questionnaires, student and teacher response questionnaires and student test questions. The results of the research based on a validation questionnaire from a team of experts who have quality media display and presentation of material as a whole obtain a percentage score of 87.2% in a very valid category. Practicality questionnaire with a percentage score of 85.1% with a very practical category. The results of the effectiveness of all students obtained a percentage score of 82.3% which was obtained from students' questions about flat shapes with very effective categories. Based on the results that have been developed by the researcher entitled Development of Canva-based interactive learning media in class IV SD flat construction material, it can be concluded that the developed Canva-based interactive learning media is valid, practical and effective.
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