The purpose of this study is how student’s critical thinking skills through the application of Brain Based Learning model. The population in this study were all students of class VII even semester SMP Muhammadiyah 1 Gadingrejo academic year 2016-2017 which amounted to 184 students and divided into 5 classes. Sampling technique used in determining the sample is cluster random sampling. Analysis of the data used is to make the percentage of achievement of critical thinking skills according to indicators measured. The results of this study are 1) students who achieve the ability to formulate the principal issues where students are asked to determine what is known and what is asked and the correct counting operation is 81.82%; 2) students who achieve the ability to determine the consequences of a provision taken where students provide a systematic answer related questions given at 75.76%; 3) students who achieve the ability to determine the solution with some solutions where students are asked to provide solutions to answer more than one of the given problem of 79.41%; 4) students who achieve the ability to disclose data / definitions / theorems in solving problems where students are asked to prove the truth of a given statement of 82.35% and 5) students who achieve the ability to evaluate the relevant argument in the settlement of a problem in which the student is required to complete problem solving problem equal to 76,47%.

It is not easy for students to understand the questions in the form of stories so that errors often occur in the process of solving problems. This study aims to describe the factors that cause vocational students' errors in solving story problems based on Anne Newman. This research is a qualitative research. The instrument used in this research is a test which consists of 3 questions and an interview guide. The subjects in this study were students of class XII TKJ SMK Patria Gadingrejo. Analysis of the data using the analysis of the location of student errors based on Anne Newman's procedure, namely a) reading the problem, understanding the problem, b) transforming the problem, c) process skills, and d) writing the final answer. The factors that cause student errors at each stage are: 1) misunderstood the problem, the cause of which is the lack of understanding and thoroughness of students; 2) problem transformation errors, the reason is that students do not master the concept and do not have mastery of the material; 3) process skill errors, the cause of which students are wrong in doing the initial steps of work; 4) errors in writing the final answer, the reason is that students are not accustomed to writing conclusions.

The culture was carefully associated with regular lifestyles, such as inside the discipline of education. However, there needs to be awareness among school members of the absorption of the culture around them through learning, especially mathematics. Therefore, this study aims to explore the geometric contents in the form of geometric transformations and the values of local batik Indonesia. This study was a qualitative study with an ethnographic approach. The techniques used in this study are observation, literature review, and interviews with Lampung cultural and batik craftsmen. Observations were made by observing batik activities and Lampung batik motifs and conducting interviews to find the mathematical and philosophical elements contained in them. The data were then completed and checked for correctness based on the results from the literature review. The outcomes of this observation imply that the human beings of Lampung utilize the idea of geometric transformation in making batik motifs, which include the Siger motif, pohon hayat motif, and kapal motif. The idea of geometric transformation used is reflection, dilation, and translation. Thus, this research can be a reference for learning mathematics and exploring other Lampung batiks motifs.

Kurangnya pemahaman guru dan siswa mengenai teknologi menjadi permasalahan utama dalam proses  pembelajaran di masa pandemi. Pelaksanaan kegiatan Pengabdian Kepada Masyarakat dilakukan melalui kegiatan pendampingan adaptasi teknologi serta pemanfaatannya dalam menanamkan literasi dan numerasi siswa di Sekolah Dasar yang tergolong kriteria 3T (Tertinggal, Terdepan dan Terluar) di Provinsi Lampung. Kegiatan dilakukan secara luring dengan menerapkan protocol kesehatan di 3 SD sasaran  yaitu UPT SD Negeri 1 Pujodadi, UPT SD Negeri 2 Podomoro dan UPT SD Negeri 4 Sendangmulyo. Kegiatan ini diikuti oleh 38 peserta yang terdiri dari guru dan siswa. Kegiatan pendampingan ini bertujuan untuk: 1) membantu para guru dan siswa dalam memanfaatkan teknologi pada pembelajaran daring; 2) meningkatkan ketrampilan guru dan siswa dalam penggunaan aplikasi pada pembelajaran daring; 3) memberikan informasi kepada guru dan siswa mengenai pentingnya penanaman literasi dan numerasi sejak dini serta pemanfaatan  media digital sebagai sarana menanamkan literasi dan numerasi. Kesimpulan dalam kegiatan pengabdian ini antara lain: 1) teknologi informasi menjadi sarana utama untuk saling berinteraksi di masa pandemi sehingga guru dan siswa dituntut untuk mampu beradaptasi dengan teknologi dalam proses pembelajaran daring; 2) pemanfaatan teknologi khususnya media digital dapat digunakan untuk menanamkan literasi dan numerasi siswa dalam pembelajaran daring. Kata kunci:  pendampingan, adaptasi teknologi, pembelajaran daring, literasi, numerasi ABSTRACT The lack of understanding of teachers and students about technology is a major problem in the learning process during the pandemic. The implementation of Community Service activities is carried out through mentoring activities for technology adaptation and its use in instilling literacy and numeracy in elementary school students belonging to the 3T criteria (Lagged, Foremost and Outermost) in Lampung Province. The activity was carried out offline by implementing health protocols in 3 target primary schools, namely UPT SD Negeri 1 Pujodadi, UPT SD Negeri 2 Podomoro and UPT SD Negeri 4 Sendangmulyo. This activity was attended by 38 participants consisting of teachers and students. This mentoring activity aims to: 1) assist teachers and students in utilizing technology in online learning; 2) improve the skills of teachers and students in the use of applications in online learning; 3) provide information to teachers and students regarding the importance of inculcating literacy and numeracy from an early age and the use of digital media as a means of inculcating literacy and numeracy. The conclusions in this service activity include: 1) information technology is the main means for interacting with each other during the pandemic so that teachers and students are required to be able to adapt to technology in the online learning process; 2) the use of technology, especially digital media, can be used to instill literacy and numeracy in students in online learning. Keywords: mentoring, technology adaptation, online learning, literacy, numeration