No abstract

One of the biggest problems for farmers in the dry season is the lack of water supply for irrigation. Currently, various types of pumps have been widely used, such as fuel pumps and pumps with PLN electricity. However, the costs required to operate these tools are pretty expensive. The solution to overcome this is using DC submersible pumps using solar panels as an energy source. The purposes of this study are to (1) determine the duration of operation of the DC submersible pump with the specifications of the battery and solar panels used, and (2) determine the productivity of the DC submersible pump in terms of the resulting discharge for various storage height conditions used. The research method used is an experimental research method using a quantitative approach. The results of this study are (1) DC submersible pump can operate for 240 minutes with 20 Ah battery at maximum voltage and uses 60 Wp solar panels, and (2) the height of the storage has an effect on the resulting discharge, there is a reduction in the resulting discharge every 0.5 meters increase in the height of the storage. Based on the analysis results, the maximum height limit for submersible pump push is 3.7 meters using a 3 per 4 inch hose. The results of this study can be a reference for farmers or users to determine the height of the water storage.

In physics learning, some concepts cannot be explored through experimentation and direct observation, especially abstract concepts. One of the efforts made to overcome this problem is to use interactive visualization through the Project Based Learning model. This study aims to examine the effect of using visualization / virtual media on the Compton Scattering phenomenon through Project Based Learning on students' conceptual understanding. This research is a quasi-experimental study using a non-equivalent pretest-posttest control group design pattern. The research instrument uses a concept understanding test that has been validated by experts. Hypothesis testing using the t-polled variant test. Improved understanding of the concept is determined based on the results of the N-gain test. The results showed an increase in students' understanding of concepts in both classes. The experimental class experienced a higher understanding of the concept than the control class with N-Gain 55.79% and 12.84%, respectively. Therefore, there is a positive and significant influence on the use of virtual media with the PjBL model on Compton's Scattering material.

<span class="ShortAbstract"><em><span>In supporting the success of online learning, it is necessary to increase the creativity of educators in developing and using learning media applications. The purpose of this research is to provide training and assistance to lecturers, teachers and prospective teacher students in making Windows and Android-based learning applications. The structured training program is carried out in collaboration between lecturers from the Teacher Training and Education Faculty and partner teams from the Permata Bunda Educational Institution through the Kedaireka Matching Fund program. The training was carried out in a hybrid manner with details of 10 participants participating offline and 60 participants participating online. The training was carried out for one day by dividing into 3 types of activities, namely the introduction of learning applications, direct practice of making learning applications and as a closing activity a questionnaire was given as an evaluation of the success of the activity. Based on the evaluation results obtained information that 14.26% of participants have been able to develop learning applications up to the publication stage, 71.43% of participants have been able to develop learning application content and 10% of participants are able to complete the learning media framework design stage, while 4 ,26% are still at the stage of program installation. In addition, at the end of the activity, participants also filled out a satisfaction questionnaire with the ongoing training activities. Based on the response analysis of participants' satisfaction above 85% which is included in the very good category. This shows that participants are very satisfied with the training they have received</span></em></span>

There are three types of learning styles, to meet the learning styles of students, both visual and auditory types, there needs to be an innovation of supportive and appropriate learning media. In addition, the learning media can also be one of the supporting media in the implementation of online learning. Therefore, a research was conducted that aims to produce online-based learning media that is integrated with video and audio. The research method used is Research and Development (R&D) with a 3D model consisting of 3 stages, namely Definition, Design. The products that have been produced are then validated by 3 experts to determine eligibility based on expert assessments. Then a limited trial was conducted on 6 students to find out their response to the learning website and become one of the references in improving the media. The expert's assessment shows that the Website-Based Sciences Learning Media product that is integrated with video and audio is very feasible, which is marked by a percentage score of 91,68%. In addition, students' perceptions of the use of Website-Based Sciences Learning Media that are integrated with video and audio are at a value of 91,31% with a good category.