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Learning strategies can be interpreted as an outline of a course or general patterns of activities carried out by an educator and students in the embodiment of teaching and learning activities to achieve the goals outlined. There are several problems found by researchers in research locations, especially in the learning process of Akidah Akhlak at MTsS Miftahul Huda Silikuan Hulu Village, Ukui District, namely, students are not able to directly absorb the material presented by the teacher, lack of enthusiasm of students in class when learning Akidah Akhlak which causes some students to not care about the material presented by the teacher, and the teacher's lack of understanding of the application of learning strategies which can be seen from the learning process the teacher only uses monotonous learning strategies so that it does not increase the learning enthusiasm of students in the classroom. This research includes qualitative research, the data collected is in the form of words and pictures, in this case it is explaining how teachers use learning strategies. Researchers collected data through interviews, documentation, and field notes. Data were analyzed in three stages, namely data reduction, data presentation, and data verification. Techniques for guaranteeing the validity of the data are source triangulation, technical triangulation, and time triangulation. Based on the results of the research that the researchers conducted, it can be concluded that: (1) The strategies used by the aqidah moral teachers in class VIII semester 2 of MTsS Miftahul Huda Siliuan Hulu Village, Ukui District, namely problem-based strategies, discovery learning strategies, and cooperative learning strategies (2) Steps -Steps for implementing learning strategies in the subject of Aqidah Akhlak a. Opening learning activities, b. Explain the competence to be achieved, c. Educators help students define organizing tasks. d. Educators and students arrange tasks together. e. Students collect information according to the problem being discussed. f. Educators supervise the course of learning activities g. The teacher gives an explanation of the material. (3) Obstacles faced in implementing the implementation of the learning strategy of aqidah morals at MTsS Miftahul Huda Silikuan Hulu Village, namely the lack of teacher preparation in implementing learning, for the learning process to be carried out suddenly.

In the learning process there will definitely be problems, both problems from the delivery of material by the teacher, problems from students, or inadequate facilities. There are many problems in learning the moral creed at MTsN 4 Fifty Cities, starting from a lack of enthusiasm for learning the moral creed. There are still students who are less active, feel bored in participating in the learning process and do not pay attention to what is conveyed by the teacher, children are indifferent to the assignments and notes given. This research is a descriptive qualitative research, the data collected is in the form of words, in this case it is explaining the problems of learning aqidah morals. Researchers collected data through interviews, documentation, and field notes. Data were analyzed in three stages, namely data reduction, data presentation, and data verification. Techniques for guaranteeing the validity of the data are source triangulation, technical triangulation, and time triangulation. Based on the results of the research that the researchers conducted, it can be concluded that: (1) The learning process of Aqidah Akhlak at MTsN 4 Fifty Kota is still in the development stage and is trying to achieve the best. By providing facilities and infrastructure to support the learning of aqidah morals, (2) The problems of learning Akidah Akhlak Class 7 at MTsN 4 Fifty Kota can be seen from two factors, namely, first, internal factors, namely problems that generally occur in teachers and students. The problem of the teacher's aqidah morals is how to convince children of the unseen and convince them to adhere to true Islamic beliefs, from students, namely they often don't focus when studying, feel bored, sleepy in class. Problems from external factors, namely the incompatibility between learning materials of the moral creed and its application in the school, family and community environment. (3) In overcoming problems related to internal factors, namely the efforts made by the teacher to overcome these problems by continuing to improve competence, MGMP activities, continuing to actively communicate with students.

This study aims to determine the effect of applying the problem-based learning model with the following research variables: (1) teacher activity; (2) student activities; (3) students' cognitive learning outcomes; and (4) students' responses by applying the Problem-Based learning model to the Basic Spices material and their Derivatives. This research was conducted in class X Culinary 3 SMKN 2 Mojokerto.             This type of research is quasi-experimental or quasi-experimental. This research was applied to class X Culinary 3 with a total of 33 students. The data in the study were obtained by several methods, namely: observation, written test (pre-test, post-test), and questionnaires. The data analysis technique used the Paired Sample T-Test.             The results of the study show: (1) the teacher's activities are in the very good category; (2) student activity is in very good category; (3) Resultspre-testand the student post-test with paired t test showed a significant value of 0.001 <0.005; (4) student responses are in very good category.

Effective learning is reflected in the extent to which learning objectives can be achieved. This study aims to examine how the planning, implementation, and evaluation of Fiqh learning using the Problem Based Learning (PBL) model in measuring the critical thinking skills of students in grades VII to IX at MTs Salafuyah Purwakarta. This study uses a qualitative approach involving teachers and students as the main subjects. Data were obtained through field observations, documentation, and interviews with teachers and students, which were then analyzed using domain, taxonomy, and componential analysis techniques. The results of the study indicate that the Fiqh learning planning in grades VIII and IX has been prepared in accordance with the Learning Implementation Plan (RPP) which refers to the steps of the PBL model. The learning implementation process also follows the stages in the model, with the teacher acting as a facilitator, including providing internet access to support learning activities. Learning evaluation includes cognitive, affective, and psychomotor aspects. The results of students' critical thinking skills show that grade VII students are in the fairly critical category, while grade VIII and IX students are included in the critical category.

Learning Indonesian contains material regarding news texts that students need to master. Based on observations at SMP N 19 Semarang, especially in class VII F, it shows that learning carried out on news text material has not been carried out effectively, and the material has not been fully conveyed properly in the learning process resulting in learning that cannot be said according to learning outcomes. Educators need to carry out activities to improve learning and deal with problems in the classroom, one of which is by designing learning media that can help facilitate the learning process. This model needs to be integrated with something that is currently closely related to students so that it can provide an imprinted and memorable learning experience for students. One model that is relevant to the characteristics of students is the ASSURE model. Based on the research that was conducted on 32 students at SMP N 19 Semarang, in the first cycle the average student assessment score was below the average score of 69.53, while in the second cycle there was an increase in student assessment scores with an average score. -class average 81.25. This proves that the application of the ASSURE model for digital pocket book learning media to news texts for class VII SMP can be said to be effective.      

This community service program aims to enhance the competence of community facilitators in implementing catechesis at Santo Krisologus BSB Parish Semarang. Based on preliminary studies, fundamental problems were identified, including deficiencies in facilitative competencies and disparities in community participation in catechetical activities. The workshop was designed using a multi-dimensional methodological approach integrating Mezirow's transformative learning theory and Groome's shared Christian praxis model. The program was conducted on October 20, 2024, with the participation of 34 novice community facilitators. The workshop implementation involved three main components: theoretical material presentation, guided practicum, and learning community formation. Results showed significant improvements in participants' theoretical understanding and practical skills, particularly in participative, appreciative, and reflective dimensions. The formation of learning communities indicates potential program sustainability through peer learning mechanisms. This program contributes to the renewal of community catechesis aligned with the vision of Church ad extra and can serve as a prototype for developing similar programs in other parishes.

Mathematics is often considered a difficult subject by students so it is not uncommon for students to experience learning difficulties such as experiencing anxiety when learning mathematics, therefore this study aims to describe the level of anxiety, describe the factors that cause anxiety, and how anxiety affects student learning difficulties class X at MAS YMPI Tanjungbalai. In this study, the number of research subjects was 36 students with a sampling technique, namely purposive sampling. Data collection in this study was in the form of data field notes using observation, questionnaires, interviews and documentation. Learning difficulties can be interpreted as a condition in the learning process which is characterized by the presence of certain obstacles to achieve learning outcomes. In this study it refers more to the problem of student anxiety which is an obstacle in achieving learning objectives. This research is a type of qualitative research and the validity technique in this study uses time triangulation. Based on the results of data analysis and discussion regarding the level of student anxiety in learning mathematics, it can be concluded that from 36 students, 8 (22.2%) students experienced high levels of anxiety, 23 (63.9%) students experienced moderate anxiety levels and 5 (13.9) %) students have a low level of anxiety. The anxiety of the students with the low anxiety category was more responsive and very enthusiastic in learning mathematics compared to the other two categories, namely the moderate anxiety category and the high anxiety category. Based on data analysis on average student learning outcomes, students with high levels of anxiety will have an average learning outcome lower than students with medium anxiety levels and high anxiety levels.

The background of this research is that the activities of Class VIII students of SMPN 31 Semarang in the learning process are not enthusiastic, students only focus on using books as learning aids. Therefore, in the learning process we need a media-based learning aid that can attract students' attention in order to improve student performance and understanding. It is important to apply TikTok-based learning application innovations to involve students in learning so that the material being taught is easy to understand.    Based on this background, the problem arises How to Use the Tiktok Application as a Learning Media in Writing Explanatory Text Writing Skills for Class VIII Students of SMPN 31 Semarang Academic Year 2022/2023? This study aims to identify the Utilization of the Tiktok Application as a Learning Media in Writing Explanatory Text Writing Skills for Class VIII Students of SMPN 31 Semarang Academic Year 2022/2023. This type of research is mixed method . Data collection was carried out by observation, interview, test and documentation methods.    The results of this study indicate that students in class VIII use the media using the social media application TikTok above, it can be seen that the average score of students in class VIII SMPN 31 Semarang in the 2022/2023 academic year when writing explanatory texts in general is at the moderate level (50- 74). The average score of the students on the explanatory text writing test performance was 66.71 at the sufficient level.

Tujuan dilaksanakannya penelitian ini adalah kemampuan literasi matematis siswa kelas X SMA Negeri 4 Medan dapat meningkat setelah diterapkannya model pembelajaran problem based learning berbantuan geogebra. Penelitian ini merupakan penelitian tindakan kelas dengan jumlah subjek adalah 36 siswa kelas X SMA Negeri 4 Medan. Pembelajaran problem based learning berbantuan geogebra merupakan objek penelitian.. Penelitian ini terlaksana dalam dua siklus. Siklus pertama dan siklus kedua teridri dari dua pertemuan. Data dikumpulkan melalui tes awal, observasi, tes kemampuan literasi matematis I dan II dan dokumentasi. Perolehan skor rata-rata siswa pada tes kemampuan awal adalah 51,53 berada pada kriteria rendah dan presentase ketuntasan sebesar 30,56%. Namun meningkat setelah diberikannya tindakan pada siklus I. perolehan nilai rata-rata siswa adalah 69,18 berada pada kriteria baik dan presentase ketuntasan sebesar 61,11%. Telah terjadi peningkatan, tetapi penelitian ini belum memenuhi indikator keberhasilan sehingga dilaksanakan siklus kedua. Perolehan nilai rata-rata siklus I adalah 79,40 berada pada kriteria baik dan presentase ketuntasan 88,89%. Sehingga dapat disimpulkan bahwa setelah model pembelajaran problem based learning berbantuan geogebra diterapkan, kemampuan literasi matematis dan presentase ketuntasan mengalami peningkatan.

Penelitian ini bertujuan untuk mendeskripsikan: (1) Bentuk pendidikan kewiraushaan di kelas IX SMK GAGAS Wanareja, (2) Implementasi pendidikan kewirausahaan, (3) Hasil dari implentasi pendidikan kewirausahaan dalam membentuk sikap wirausaha pada siswa kelas XI SMK GAGAS Wanareja. Penelitian dilaksanakan di SMK GAGAS Wanareja. Penelitian menggunakan pendekatan deskriptif kualitatif. Subjek penelitian dalam penelitian terdiri dari kepal sekolah, guru dan siswa. Teknik pengumpulan data dengan observasi, wawancara dan dokumentasi. Data dianalisis dengan cara pemngumpulan data, reduksi data,penyajian data dan penarikan kesimpulan. Keabsahan data dilakukan melalui triaangulsi sumber dan triangulasi teknik. Hasil penelitian: (1)Bentuk kegiatan pendidikan kewirausahaan di SMK GAGAS Wanareja dapat diinternalisasikan melalui beberapa aspek, yaitu dapat di integrasikan melalui mata pelajaran, melalui kegiatan ekstrakurikuler, melalui kegiatan-kegiatan sekolah, melalui muatan lokal, dan melalui buku atau bahan ajar. (2) Implementasi pendidikan kewirausahaan dalam membentuk sikap siswa di SMK GAGAS Wanareja adalah dengan menggunakan kurikulum 2013, model pembelajarannya menggunkan (discovery learning, inquiry learning,problem based learning,project based learning).(3)Hasil Implementasi Prndidikan Kewirausahaan  di SMK GAGAS Wanareja sudah menunjukan hasil yang baik. Dimana siswa sudah menunjukan sikap seorang wirausaha, minat berwirausaha dan mampu memproduksi barang yang mempuanyai nilai jual.

This activity aims to provide an overview of early childhood language development from learning stimulation activities through interactive video learning media at the Denali Development Center (DDC). Interactive video was chosen because it is considered very suitable for the characteristics of early childhood who tend to get bored easily, have low focus and concentration, and tend to be active and find it difficult to sit still. Based on the results of observations that have been made at DDC found problems where some children aged 1-3 years, experience speech delays where children cannot pronounce vocabulary correctly when communicating, the vocabulary mastered by children is still small, children cannot compose simple sentences when communicating, children have not been able to provide answers to questions that are given quickly and straightforwardly and the child has not been able to listen properly. From the results of the learning activities that have been carried out during the service period, gradually the child experiences significant language development where the child is quiet and never makes a sound or gives a slow reaction, this child begins to make sounds such as laughter or bubbling. And other children who cannot pronounce words correctly, gradually these children can say some words well and their meanings can be understood and the vocabulary they master also develops. Therefore providing stimulation to children is very important to reach this stage of development. Children who receive less stimulation tend to have problems and obstacles in their development.  

Penelitian ini bertujuan untuk (1) mengetahui implementasi model Problem Based Learning untuk meningkatkan kemampuan berfikir kreatif siswa pada tema 1 subtema 3  Kelas III SD N  1 Waluyorejo, (2) mengetahui peningkatan kemampuan berfikir kreatif siswa yang menggunakan model Problem Based Learning pada tema 1 subtema 3 kelas III SD Negeri 1 Waluyorejo. Model penelitian ini adalah Penelitian Tindakan Kelas (PTK). Penelitian Tindakan Kelas (PTK) ditandai dengan adanya suatu tindakan. Tindakan ini tidak hanya dilakukan sekali, akan tetapi tindakan ini dilakukan berulang-ulang sampai tujuan Penelitian Tindakan Kelas (PTK) ini tercapai. Hasil penelitian ini dapat dijelaskan sebagai berikut: (1) implementasi model pembelajaran Problem Based Learning meliputi; mengidentifikasi masalah, membimbing penyelidikan, mengembangkan hasil penyelidikan, mengevaluasi proses pemecahan masalah, generalisasi atau kesimpulan dapat diterapkan ke siswa pada materi tema 1 subtema 3 kelas III di SD Negeri 1 Waluyorejo, (2) untuk hasil kemampuan berfikir kreatif siswa pada pembelajaran tematik dengan mengimplementasikan model Problem Based Learning mampu meningkatkan berfikir kreatif siswa dengan hasil pada pra siklus rata-rata persentase ketuntasan tes kemampuan berfikir kreatif  siswa sebesar 32 % dengan kategori sangat kurang. Kemudian pada siklus I rata-rata persentase ketuntasan tes kemampuan berfikir kratif siswa meningkat mencapai 52% dengan kategori kurang, sedangkan rata-rata ketuntasan tes kemampuan berfikir kreatif  siswa pada siklus II yang diperoleh meningkat menjadi 88,75 % dengan kategori sangat baik. Sehingga implementasi  model Problem Based Learning menjadi alternatif solusi untuk meningkatkan kemampuan berfikir kreatif siswa di SD Negeri 1 Waluyorejo.

This research is motivated by the important role of students in building constructive habits of mind. In order for students to have the habit of thinking, teachers need freedom and a learning attitude to achieve this through constructivist theory-based learning. This research is field research (Field Research) which is descriptive qualitative in nature. The subjects of this research are Islamic Religious Education teachers. So this research uses purposive sampling. Purposive sampling is a person who is considered capable of providing information to make it easier for the writer to obtain information from the object under study. Data collection techniques use observation and interviews. The results of this research concluded that the steps in implementing constructivist learning theory at SDUA Taman Harapan Curup are: a. introduction, namely by making preparations, by looking at the material to be taught, b. In essence, the teacher instructs students to form small groups, one group consisting of two people, and the teacher gives assignments to students to discuss and analyze the problems given. c. Closing activity, the teacher instructs students to present the results of their discussion.

Penelitian ini dilatarbelakangi dari data observasi yang menunjukkan bahwa hasil belajar siswa terhadap materi SPLDV tergolong rendah. Oleh karena itu, tujuan penelitian ini adalah untuk mengetahui apakah hasil belajar siswa pada materi sistem persamaan linier dua variabel berbeda ketika diajar menggunakan model Problem Based Learning dan Direct Instruction. Penelitian ini dilaksanakan di SMP N 12 Dumoga. Subjek penelitiannya adalah seluruh siswa pada dua kelas, yang mana satu kelas eksperimen, dan kelas kedua adalah kelas kontrol. Pengumpulan data dilakukan dengan memberikan pre-test kepada kedua kelas sebelum diberikan perlakuan, selanjutnya diberikan post-test setalah diberikan perlakuan. Dalam penelitian ini teknik analisis data yang digunakan adalah Uji Perbedaan Rata-Rata Dua Kelompok yang Tidak Berpasangan (Uji-t) dengan hasil pengujian hipotesis diperoleh , maka tolak . Berdasarkan hasil penelitian, diperoleh kesimpulan bahwa siswa yang mengalami pembelajaran dengan model PBL lebih baik dari siswa yang mengalami pembelajaran dengan model DI pada materi SPLDV. Dapat disimpulkan bahwa rata-rata hasil belajar siswa siswa yang diajar menggunakan model Problem Based Learning lebih baik dari siswa yang diajar menggunakan model Direct Instruction.

This study aims to determine the application of problem based learning learning models with lottery game media in improving junior high school students' problem solving abilities. This research is an experimental research in the form of Pre-Experimental Designs. The design used is One Group Pretest-Postest Design. The population in this study were class VIII A and class VIII B. The sample in this study was students of class VIII B consisting of 20 students with the selection of subjects based on the cluster random sampling technique. The data collection technique used is a measurement technique with a data collection tool in the form of test questions in essay form. The data analysis technique used was anava one line of dissimilar cells, with further testing using the Scheffe method. The research results obtained were that there was a significant increase in students' mathematical problem solving abilities before and after being given treatment through the problem based learning model using lottery media with high categories.  

Hasil observasi di lapangan ditemukan bahwa nilai keterampilan membaca siswa belum mencapai KKM, siswa masih kurang aktif dalam pembelajaran, siswa masih jenuh saat belajar, motivasi belajar siswa kurang, dan interaksi saat pembelajaran belum maksimal. Oleh karena itu, peneliti ingin meningkatkan kualitas pembelajaran di kelas khususnya mata pelajaran Bahasa Indonesia dengan melakukan penelitian tindakan kelas. Penelitian yang dilakukan peneliti bertujuan untuk mengetahui efektivitas dan penerapan model PBL (Problem Based Learning) dalam meningkatkan keterampilan membaca pada mata pelajaran Bahasa Indonesia siswa kelas VI MI Ujung Bulo tahun pelajaran 2022-2023. Berdasarkan hasil tindakan yang dilakukan terjadi peningkatan daya serap kelompok yang terjadi pada Siklus I, II, dan III sebesar 60,50%; 71,25%; dan 83,50%. Sedangkan peningkatan ketuntasan kelompok terjadi pada Siklus I, II, dan III sebesar 50,00%; 70,00%; dan 90,00%. Dan peningkatan ketuntasan individu yang terjadi pada Siklus I, II, dan III sebesar 10 siswa, 14 siswa, dan 17 siswa. Berdasarkan hasil tersebut, dapat disimpulkan bahwa penerapan model PBL dapat meningkatan keterampilan membaca pada mata pelajaran Bahasa Indonesia siswa kelas VI MI Ujung Bulo Kec. Parangloe Kab. Gowa tahun pelajaran 2022-2023. Selain itu juga, model PBL sangat efektif diterapkan dalam meningkatkan keterampilan membaca siswa pada mata pelajaran Bahasa Indonesia kelas VI MI Ujung Bulo Kec. Parangloe Kab. Gowa tahun pelajaran 2022-2023.    

Tujuan penelitian ini untuk menganalisis apakah metode PBL dapat meningkatkan kemampuan HOTS mahasiswa dibandingkan dengan menggunakan metode diskusi. Metode penelitian menggunakan quasi experimental with non equivalent control group design. Teknik pursposive sampling digunakan dalam pemilihan sampel yaitu kelas Akuntansi Lanjutan A sebagai kelas eksperimen berjumlah 26 orang dan Akuntansi Lanjutan B sebagai kelas kontrol berjumlah 12 orang. Hasil analisis post test menunjukkan bahwa data nilai HOTS siswa terdistribusi secara normal dan homogen sehingga digunakan uji statistik ANNOVA one way. Hasil uji hipotesis menunjukkan bahwa variabel metode pembelajaran diperoleh nilai F = 11,101 dan P = 0,002 < 0,05 berarti bahwa untuk uji hipotesis diterima, bahwa terdapat perbedaan kemampuan berpikir kritis mahasiswa menggunakan metode problem based learning dengan metode diskusi. Dapat disimpulkan bahwa metode pembelajaran PBL berpengaruh terhadap HOTS mahasiswa.

Penelitian ini bertujuan untuk : (1) memperoleh E-LKPD yang valid dengan menggunakan model pembelajaran Problem Based Learning pada materi sistem persamaan linear dua variabel kelas VIII SMP Negeri 29 Medan (2) Untuk memperoleh E-LKPD yang praktis dengan menggunakan model pembelajaran Problem Based Learning pada materi sistem persamaan linear dua variabel kelas VIII SMP Negeri 29 Medan (3) memperoleh E-LKPD yang efektif dengan menggunakan model pembelajaran Problem Based Learning pada materi sistem persamaan linear dua variabel kelas VIII SMP Negeri 29 Medan. Subjek penelitian ini adalah 1 orang guru dan 30 orang siswa kelas VIII SMP Negeri 29 Medan dengan instrumen penelitian yang berupa lembar validasi RPP, lembar validasi materi dan media bahan ajar interaktif, serta angket respon guru dan peserta didik. Hasil penelitian menunujukkan bahwa : (1) E-LKPD yang dikembangkan telah memenuhi kriteria kevalidan berdasarkan penilaian validator materi dan media, dengan perolehan skor rata-rata berturut-turut 3,68 dan 3,76 yang mana keduanya memperoleh kategori sangat layak (SL). (2) Ditinjau dari aspek kepraktisan, E-LKPD yang dikembangkan dinyatakan praktis berdasarkan hasil angket respon siswa dan guru. Dari hasil angket respon siswa diperoleh nilai kepraktisan produk yaitu sebesar 79,31% dan hasil angket respon guru memperoleh nilai kepraktisan sebesar 91,66%. Dikarenakan hasil angket respon siswa dan guru berada pada kategori rentang 76%-100%, maka E-LKPD dikategorikan sangat praktis (3) Ditinjau dari aspek keefektifan, E-LKPD dinyatakan efektif. Hal ini dilihat dari: (a) tercapainya ketuntasan belajar secara klasikal yaitu sebanyak 93% siswa yang mengikuti pembelajaran mencapai nilai 65, (b) tercapainya indikator/ketuntasan tujuan pembelajaran, dimana rata-rata ketuntasan belajar individual sebesar 86,30 dan (c) siswa memberikan respon positif terhadap pembelajaran

The background of this research is that not all students can understand this problem-based learning, and also not all students are able to think actively in solving problems that occur. Students are less enthusiastic in participating in learning and students who play around or don't focus on learning. From the problems that exist, the researcher is interested in studying the application of problem-based learning in Islamic Religious Education Class X at SMAN 1 Kapur IX District and its inhibiting factors. This study aims to find out how the application of this problem-based learning strategy and its inhibiting factors. This type of research is a descriptive qualitative research that describes problem-based learning strategies in Islamic Religious Education Class X at SMAN 1 Kapur IX District. In collecting data researchers used observation techniques, interviews and documentation. Meanwhile, to analyze it, the researcher uses data reduction, data presentation and conclusion drawing. Based on the results of the research conducted, the authors found that Islamic Religious Education teachers apply problem-based learning strategies starting from teacher planning in preparing lessons by making lesson plans which serve as teacher guidelines in teaching and learning activities carried out in the classroom. The application of problem-based learning strategies is carried out through three activities, namely preliminary activities, core activities and closing activities. The activity starts from the teacher entering the class by greeting, conditioning the class and then praying together after that the teacher explains the indicators and learning objectives. The core activities of student learning are given related to learning problems then students will observe and find solutions to the problems that occur. Closing activities at the end with the teacher and concluding student lessons, giving assignments and praying together. The inhibiting factors found were time allocation, students who were less able to solve problems that occurred and students playing games during learning.

Tujuan dari penelitian ini adalah untuk menghasilkan produk lembar kerja peserta didik (LKPD) Berbasis Problem Based learning (PBL). Penelitian ini menggunakan model pengembangan atau R&D ( Research and development). Subyek penelitian ini sebanyak 30 orang peserta didik di kelas VIII-A SMP Negeri 1 Doloksanggul. Hasil penelitian menunjukkan bahwa LKPD Berbasis Problem Based Learning (PBL) yang dikembangkan adalah : (1).Valid dengan indikator penilaian aspek kelayakan isi memproleh nilai presentase 91,79% dengan kategori sangat valid, indikator penelitian berupa aspek penyajian materi memproleh nilai presentase sebesar 95,55% dengan kategori sangat valid, aspek kebahasaan dan nilai presentase sebesar 90% dengan kategori sangat valid dan aspek kegrafikan dengan nilai presentase sebesar 97,03% dengan kategori sangat valid, serta validitas LKPD secara keseluruhan memproleh nilai presentase 94,16% dengan kriteria sangat valid, (2) LKPD yang dikembangkan memenuhi kriteria efektif berdasarkan aspek keefektifan. Keefektifan diproleh dari hasiil ketuntasan belajar siswa secara klasikal adalah 84,33% sehingga secara klasikal telah memenuhi kriteria pencapaian ketuntasan dan siswa yang tuntas belajar dengan presentase 86,66% yang termasuk dalam kategori tuntas. (3) LKPD yang dikembangkan mampu meningkatkan kemampuan penalaran matematis siswa yang mencakup 4 indikator, pada indikator pertama 93% indikator kedua 86% indikator ketiga 81% dan indikator keempat 78%. Sehingga kemampuan penalaran matematis siswa meningkat dari uji coba pretest dan uji coba posttest.