Core knowledge competencies require students to master the dimensions of factual, conceptual, and procedural knowledge. If the knowledge gained by students is not balanced, it will affect their way of thinking. Knowledge competence can be measured one way through the problem instrument. Facts on the ground state that the instrument questions used have not been able to measure these three pieces of knowledge. The purpose of this study is to describe the development process and products resulting from the development of factual, contextual, and procedural questions on material stress. This research is development research that uses the ADDIE model (Analyze, Design, Development, Implementation, Evaluation). The results obtained are in the form of 10 questions, which consist of 7 multiple choice and 3 essays. Based on theoretical validation by the validator, it was declared very valid with an average score of 97.03%. The reliable value of multiple-choice questions is 0.726 and essay questions are 0.826 with high criteria. The difficulty level of multiple-choice questions and essays is 90% with moderate criteria. The different power of multiple-choice questions is 50% with good and sufficient criteria.

Students' English language skills are still inadequate, according to preliminary research conducted by the researcher at MTs Salafiyah Syafi'iyah Seblak Diwek Jombang. One of the causes of low student ability is the lack of vocabulary mastery. So, the researcher has taken the initiative to use flashcard media. The purpose of the study was to determine the effectiveness of students' vocabulary mastery before and after being taught using flashcards. The researcher has used a pre-experimental design, consisting of pre-test, treatment, and post-test. The study population was 108 students of class VII MTs Salafiyah Syafi'iyah Seblak Diwek Jombang. The sample was 19 students of class VII-D using purposive sampling. The study population was 108 students of class VII-D MTs Salafiyah Syafi’iyah Seblak Diwek Jombang. The sample was 19 students of class VII-D using purposive sampling. To collect data on students' vocabulary knowledge, the researcher has used pre-test and post-test as research instruments. The test was an objective test, which consisted of 25 multiple-choice questions. The researcher used a t-test to test the data and obtained Sig. (2-tailed) less than 0.05. Then it is stated that Ha has been accepted. This has shown that there is a considerable variation in the average score of students' vocabulary acquisition before and after being taught in the classroom by using flashcards. After collecting the data, the researcher received before and after test results, with a pretest mean score of 74.32 and a posttest mean score of 90.53. Based on the results of the data analysis, many conclusions have been obtained. Namely, before using flashcards, students' vocabulary was lower than after using flashcards. Students' vocabulary before and after teaching using flashcards. Thus, it has been concluded that flashcard media has been useful in the vocabulary of students of class VII D MTs Salfiyah Safi'iyah Seblak Diwek Jombang.

Advances in science and technology that continue to dynamically change require changes in various sectors of life. The world of education is involved in making changes. Various innovations continue to be created to keep up with the times. Innovation in the form of using e-learning is expected to keep up with the times that continue to grow. Technology-based learning resources and media are expected to keep up with the times. The innovations created must be balanced with the policies implemented in the field. E-learning that is implemented is expected to improve the quality of education for the better. This research uses the library research method by collecting information from various quality reference sources. Creating quality learning must be balanced with the courage to innovate. Some innovations can be done by utilizing and developing various learning devices to the maximum such as the use of computers/laptops connected to the internet, creating teaching materials using various applications, and providing opportunities for students to access website services from the government.

This study aims to determine the use of the schoology application on the interest in learning of class XI social studies students. Approach This research uses a qualitative descriptive approach. Respondents in this study were 2 IT (Information Technology) teachers and five students of class XI IPS MA Nurul Jadid from 18 students. Data collection techniques carried out include observation and interviews. Data analysis techniques in this study include data reduction, data presentation, and drawing conclusions. Based on the results of the research and discussion, it can be concluded that the use of the Schoology application can be carried out well in class XI IPS MA Nurul Jadid Sumber Anyar. Analysis of the use of the Schoology application by focusing on student interest in independent character, discipline and responsibility.

The earth's surface moves downward from a point in a process known as land subsidence, which causes the elevation of the ground surface to drop or become lower than it was. The geoelectric technique is one way to investigate soil. Depending on the electrical characteristics of the rock, this technique is one of the geophysical exploration methods that can give a generalized (map) of a rock layer or formation and the depth of the rock layers. The goals of this study were to model landslide behavior and identify the soil layers using geoelectric data. The rock or hard soil zone has a high resistivity rating based on geoelectricity. As a result, evidence of topsoil to clay may be seen in Trace 1's rock or hard soil zones, which range in depth from 18.5 to 24.9 tie points and 40 to 120 tie points, respectively. The soil layer is unidirectional and uniform. This geoelectrical value is linear with the results of a soil survey performed using the drilling method, i.e., the soil properties are quite sturdy and strong at a depth of 10–20 meters, with NSPT at a depth of 10–17 and increases at that depth. than 20 m at NSPT 60, and because it has reached twice NSPT 60, this can be considered real rock.

Desalination (removal of salt content) of salt or brackish water into fresh water is another way to obtain fresh water. The two most widely practiced methods are distillation (distillation), heating seawater until it evaporates and then condensing to get fresh water and reverse osmosis, seawater at high pressure through a thin membrane to pass water molecules. Another method that can be used in the desalination process is the adsrobtion process. One of the media that can be used in the adsrobtion process is chitosan. This research is carried out by the bacth method with two variables, the first variable concentration, namely 800, 1600, 2400, 3200 and 4000 ppm. The second variable is the stirring time with variations, namely 100, 200, 300, 400 and 500 rpm. Based on the results of studies that have been carried out, the best concentration of shrimp skin chitosan is at a concentration of 4000 mg / L or the addition of 200 mg of chitosan in 0.25 L of brackish water. At this concentration, the absorbent can reduce the salinity of brackish water by 86.6694% and for the best stirring speed the shrimp shell chitosan is at a speed of 300 rpm with the addition of 1000 mg of chitosan in 0.25 L of brackish water. At this stirring speed, the adsorbent can reduce the salinity of brackish water by 82.6335%.

Land subsidence is land subsidence in a vertical direction with respect to a specific elevation reference surface, such as B. Mean Sea Level (MSL) or a reference ellipsoid area. Subsidence is a natural phenomenon that often occurs in built-up areas, such as large cities that sit on top of a layer of sediment. This analysis assesses the stability and integrity of the building and obtains parameters in unstable areas and it is hoped that data will be available that can represent the soil conditions and their relevance to development. Also information about the effects of changes in the field due to development, such as e.g. B. Ground stability, and awareness of the possibility of excessive ground subsidence which may adversely affect the structure of the building above. The results of the decrease from tests on geoelectric trajectories with loading according to the construction conditions gave a decrease value of 6.78-7.8 cm, with the largest stress analysis on the ground 1000-1200 kN/m2 in the deepest soil layer at an altitude of 1000- 1200kN/m2 is -20-25m. Chemichal (epoxy resin) reinforcement method can inhibit the subsidence rate by 0.20 meters against the subsidence analysis results of 0.24 meters. The reinforcement method using compaction grouting can inhibit the subsidence rate by 0.21 meters versus the subsidence analysis results of 0.24 meters.