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KAJIAN HASIL PELAKSANAAN PELATIHAN PEMBELAJARAN IPA BERBASIS INKUIRI BAGI GURU SEKOLAH DASAR (SD) DI KABUPATEN PONOROGO TAHUN 2018 Prastika, Lintang Ratri; Nulhakim, Lukman; Indarti, Lili
Jurnal Pembelajaran Sains Vol 4, No 1 (2020)
Publisher : Prodi Pendidikan IPA FMIPA Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.217 KB) | DOI: 10.17977/um033v4i1p16-22

Abstract

The purpose of this study was to determine the effectiveness of the training and participants' responses to the training. The research was a quasi-experiment with one-group pretest postest design. The sample was chosen using purposive sampling method. The number of samples was 38 elementary school teachers. The research instrument was a test question instrument to determine the effectiveness of the training, and a questionnaire to determine the teacher's response to the training. By using Hake's normalized gain data analysis, a training effectiveness score of 0.40 was obtained, which means that the training was effective enough to increase participants' knowledge related to the training material. While the teacher responses were processed in terms of percentages and graphs, an average of 58.16% of participants rated very well on the training program and an average of 68.95% of participants rated very well on the performance of the facilitator during the training. Based on these results the training carried out has been assessed well by the participants but it is necessary to develop an advanced training program so that the teachers participating in the next training will better understand the inquiry learning model in science learning.
The Virtual Lock-in Amplifiers - Accuracy of Measurement Results in Light Transmission Experiments Prastika, Lintang Ratri; Indarti, Lili; Hendro, Hendro
JPSE (Journal of Physical Science and Engineering) Vol 6, No 1 (2021): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

This research focuses on the analysis of the measurement result of the virtual lock-in amplifier (virtual-LIA) in the light transmission experiment as the trial step of developing the virtual-LIA. The virtual-LIA used in this research is designed by using the Vernier sensor DAQ as the data acquisition and the LabVIEW as the programming media. The design of virtual-LIA is based on the mathematical operations of LIA. The type of virtual-LIA is a single phase with the capabilities to process the external reference signal. Light transmission experiments are carried out using formazin polymer suspension with turbidity level of 3000 NTU, 3500 NTU, and 4000 NTU as the medium in which light is passed. The accuracy of the measurement results is known by comparing the results of virtual-LIA with real-LIA SR510. The experiments are also carried out in bright and darkroom conditions to determine the ability of virtual-LIA in reducing noise signals. Based on the experiment, the results obtained that the measurement accuracy of the virtual-LIA developed is above 94% compared to the LIA SR510. Virtual-LIA could measure small signals with and without noise with the average percentage of differences measured between dark and bright conditions is 0.54%.DOI: 10.17977/um024v6i12021p001