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Through classroom action research conducted in two cycles, this study aims to improve the understanding of grade IX-I students of SMP Negeri 13 Surabaya on the material of main ideas and supporting ideas of descriptive texts by implementing the TPS cooperative learning model. The results of the study showed a significant increase in student understanding after the implementation of the Think Pair Share learning model. In the pre-cycle, the average student test score was 65. After cycle I, the average score increased to 78, indicating an increase of 20%. In cycle II, the average score reached 85, or an increase of 9% from cycle I. This increase is indicated by the increasing number of students who can correctly identify the main idea and supporting ideas of descriptive texts. In addition, student activeness in discussing and giving opinions also increased significantly. This shows that the Think Pair Share cooperative learning model is effective in improving students' understanding of the main idea and supporting ideas of descriptive texts.

The aim of this research is to enhance students' English speaking skills through interview simulation techniques with job application material, making them more active. This research uses experimental techniques that combined with quantitative research techniques through direct speaking tests. The research questions considered in this study are: What are interview simulation techniques effective in enhancing students' English speaking skills? How can interview simulation techniques enhance students' English speaking skills? The aim of this research is to determine the effectiveness of interview simulation techniques in improving students' English language skills. To assess student results regarding the use of interview simulation techniques in teaching speaking to enhance abilities. This research method consists of pre-test, treatment, post-test. The analytical methods used for data processing are included in Social Science Statistics 22.0 for Windows. The result was that before applying the interview simulation technique, only 50% of students were able to speak English. After applying the interview simulation technique, it increased students' ability to speak English by 80%. Analysis of student test results shows that the interview simulation technique is effective in enhancing students' English speaking skills. Applying simulation techniques in learning English, especially speaking, is the right strategy to enhance students' skills.    

This research aims to produce an Android-based character calculator media for mathematical problem solving abilities in vocational school students' statistics material that reaches the level of validity, practicality and effectiveness. This research uses the Borg and Gall development design model with steps consisting of potential and problems, data collection, product design, design validation, design revision, product testing, and product revision. The subjects in this research were class X students at SMK Negeri 7 Pontianak, consisting of 31 students. The data collection techniques used are indirect communication techniques and measurement techniques with the data collection tools being validation sheets, questionnaires and test questions. The first research result was validation of the calculator media, namely with an average score from the three experts of 87.27% with very valid criteria. Practicality value, seen from the questionnaire scores filled in by teachers and students which were accumulated to obtain a percentage of 96.76% with very practical criteria. Furthermore, effectiveness, seen from the results of students' posttest results, obtained a percentage of 80.64%, with reference to the school's KKM score, namely ≥75, so the average student test results have complete criteria and are classified as very effective. From the validation results, practicality and effectiveness, it can be concluded that the Android-based character calculator media for mathematical problem solving abilities in vocational school students' statistics material is classified as effective to use.  

One of the tests that measures intelligence is the IST Test with 9 sub tests, and one of the sub tests in it is the last sub test, namely ME (Merkaufgaben). This subtest measures memory. This memory is closely related to attention and the ability to remember. Memory can be said to be sharp or dull when viewed from the accuracy, thoroughness or outline, or shallowness of the memory content. Estimates, feelings, emotions, affection, hopes and desires; Also plays a role in memory function. In this research, the researcher took only one thing, namely memory ability, the sample was carried out on psychology students in semesters 4, 6, 8, totaling 98 students. Using descriptive research methods. The aim of this research is to see a picture of the memory level of Psychology students at the Main Potential University in the morning and evening students because memory is very important for their ongoing learning process. Recall or memory is a mental process that an individual has to code, store, maintain and remember information, knowledge or past experiences in the brain which can be recalled for use some time later. This research approach uses a 6 minute test, then scoring based on morning and evening groups and based on semester level. Tests are given based on each class, the morning class is carried out during the morning class at 09.00 and the evening class is carried out at 18.00. The results obtained were that the superior level of memory was found in semester 8 students at 17.3%, semester 6 at 11.2%, semester 4 at 7.14%. High average memory level at semester 8 at 13.26% and semester 6 at 9.1% and semester 4 at 13.26%. 7 is 7.14% Average memory level is located in semester 6 with 14, namely 14.26% and semester 4 with 10, namely 10.20% and semester 8, namely 3, is 3.06%. Low Average level of memory is located in semester 6, namely 7, namely 7.14% and semester 6. of 6, namely 1.12% and semester 8 of 1 with 1.02%. The highest level of superior memory based on morning and evening classes is in semester 8 of the evening class, 17.34%. These results are useful in the future and need to be improved in upgrading memory to be able to carry out daily learning activities.