Simple Harmonic Motion Electronic Teaching Materials Based on Authentic Learning to Train Students’ Problem-Solving Skills: Aspects of Validity

The absence of teaching materials that can train students’ problem-solving skills optimally is the background of this research. This study describes the validity of simple harmonic motion electronic teaching materials based on authentic learning to train students’ problem-solving skills. This research is development research with the ASSURE model that focuses on the Utilization of Instructional Materials stage. The instrument used is the validity sheet of electronic teaching materials. The validity of electronic teaching materials is viewed from the aspect of content, construct, and appearance. The validation of electronic teaching materials is carried out by three validators: two expert validators and one practitioner validator. The data analysis technique used descriptive statistics. The results showed that the validity of electronic teaching materials with an average score of 3.87 was categorized as good. It was concluded that the simple harmonic motion electronic teaching material based on authentic learning was declared valid to train students’ problem-solving skills. Furthermore, these electronic teaching materials can be used as teaching materials in the classroom to determine the practicality and effectiveness of the developed teaching materials.

Object of learning in the teaching of simple harmonic motion: a case study using active methodology (ISLE type)

In classroom, the Simple Harmonic Movement (SHM) is a content generally seen only in the form of expository classes and, for this reason, considered difficult to understand. In order to solve this problem, the following research question was asked: does the Learning Object (LO) contribute to the understanding of SHM, based on the ISLE Methodology approach? For that, simulations of SMH graphics were created with the aid of digital tools. This research was carried out at IFCE Campus Fortaleza and its main objective was to analyze the use of a LO in the discipline of Physics, aiming to assist the student in the simulation of graphs of the Simple Harmonic Movement (SHM), supported by the Active Methodology of the ISLE type, which proposes a Science Investigative Learning Environment. The students performed a pre-test in which they were to analyze and interpret the data of an SHM from its graph. Then, using the LO, the students explored the variables present in a periodic movement, being able to interact with it and visualizing the changes in the movement and in the graphs related to it. Finally, the students performed a post-test that consisted of, again, interpreting an SHM phenomenon based on its graph and producing new graphs representing other of its variables. The results point to an improvement in the understanding of the learners regarding the studied subject, indicating that the use of digital tools and active methodologies can contribute to a meaningful learning of Physics concepts, more specifically, of the SHM.

PARAMETER ESTIMATION FOR OSCILLATORY SYSTEMS

Simple harmonic motion was investigated of a rotational oscillating system. The effect of dumping and forcing on motion of the system was examined and measurements were taken. Resonance in a oscillating system was investigated and quality factor of the dumping system was measured at different damping forces using three different methods. Resonance curves were constructed at two different damping forces. A probabilistic model was built and system parameters were estimated from the resonance curves using Stan sampling platform. The quality factor of the oscillating system when the additional dumping was turned off was estimated to be $Q = \num{71 \pm 1}$ and natural frequency $\omega_0 = \num{3.105 \pm 0.008}\, \si{\per\second}$.

Analisis Model Pembelajaran Hipotesis Deduktif Terhadap Pemahaman Konsep Siswa pada Materi Gerak Harmonik Sederhana

This study aims to analyze the physics learning process with a deductive hypothesis learning model on students' understanding of concepts in simple harmonic motion material. The method used in this study is a literature study by reviewing some of the literature to be analyzed and concluded.