Perkembangan teknologi informasi dan internet dewasa ini sangat pesat sehingga, bukan hanya mempengaruhi produduk elektronik aja , melainkan juga dalam dunia pendidikan terutama dalam metode pembelajaran. Salah satu metode pembelajaran online yang saat ini sedang berkembang dan mulai digunakan adalah google classroom. Google classroom adalah aplikasi yang dikhususkan untuk media pembelajaran online atau istilahnya adalah kelas online sehingga dapat memudahkan guru dalam membuat, membagikan serta mengelompokkan setiap tugas tanpa menggunakan kertas lagi. Hal ini tentunya akan membuat pembelelajaran menjadi lebih efektif terlebih lagi guru dan siswa bisa setiap saat bertatap muka melalui kelas online google classroom. Dan juga siswa nantinya dapat belajar, menyimak, membaca, mengirim tugas, dari jarak jauh. Pengabdian masyarakat ini bertujuan untuk memberikan edukasi pembelajaran serta wrokshop tentang optimalisasi dalam penggunaan google classroom di lingkungan SMK Negeri 1 Bangkinang. Dengan adanya pengabdian masyarakat ini diharapkan dapat membantu majelis guru dalam memanfaatkan dan menerapkan google classroom sebagai media pembelajaran di SMK Negeri 1 Bangkinang.

The learning process in West Sumatera, Indonesia, changed into an online-based system due to the Covid-19 pandemic, which involved educators and students using many platforms of e-learning for teaching and learning. Therefore, the purpose of this research is to evaluate the use of e-learning platforms among students at universities in West Sumatera, Indonesia, during the Covid-19 pandemic, particularly widely used Google Classroom. This research employs the Technology Acceptance Model (TAM) by considering relevant external factors related to the pandemic situation and examining their effects on the acceptance of Google Classroom. A questionnaire was distributed from December 11th to December 31st, 2020, to collect data via an online-based survey. Using Cochran's formula with a confidence level of 95%, 383 students were selected as samples, while Structural Equation Modeling (SEM) was applied as a method for data analysis. The result showed that the facility had made the learning process easy for students, which influenced its usefulness. The facility is related to the possession of the required tools and knowledge to utilize the technology, alongside the significant effect on ease of use and usefulness. When adequately provided, the ease and benefit of using Google Classroom are maximally felt when distance learning is ongoing. Consequently, the ease of use positively influenced the benefits of the platform as its features were simple and benefited the students during the learning process. The usefulness of Google Classroom also had a positive influence on attitude towards the platform, and this variable finally determined the intention to use, which was significantly influenced by the perceived usefulness of e-learning. Therefore, this study shows that factors that determine facility, such as the internet, devices used by students, or knowledge to use Google Classroom, are important in online learning during the Covid-19 pandemic.

Republic of Indonesia Law No. 14 of 2005 describes teachers as professional educators with the main task of educating, teaching, guiding, directing, training, evaluating, and evaluating students in the formal education listed. The teacher has an important role in planning and implementing the learning process, so as to obtain opportunities to improve competence. One of the activities that must be carried out by teachers in developing their competence as teachers is scientific publications, which are listed in Article 11 of the Minister of PAN & RB Regulation No.16 of 2009 concerning teacher functional positions. In designing scientific publications there are stages and methods that are different from other papers. The research work comes from the research activities carried out so that it can be a reference in the follow-up of educational activities. The existence of information technology devices makes it easy for teachers to carry out research activities to publish them. The more research carried out at this time is not necessarily comparable with the quality of research. The demand to fulfill good and correct reference criteria is a challenge for teachers in the stages of reviewing and following up on publications. This service activity provides other insights into better article writing and reference techniques using computer-assisted devices. Problems with the obstacles faced so far by the teacher in writing are expected to be solved so that joint efforts in creating an environment of professionalism in education can be realized.

Confidentiality in transfer the messages is an important thing to maintain. Increased security in transfer the messages can be improved using cryptography and steganography. This article aims to apply a combination of AES 128 cryptography and LSB steganography in an application, and measures the quality of the stego-image. In this article, the AES 128 algorithm is used for the encryption process of secret messages and the LSB algorithm for the process of inserting secret messages in the cover image. PSNR is used to measure the quality of the stego-image, by comparing the cover image and the stego-image. This research produces an application that can be used for the security of sending text messages by combining the AES 128 algorithm in the plaintext encryption and the LSB algorithm in the secret message insertion process. In term of measuring the quality of the stego-image, it was found that the character length of the secret message would have an impact on the MSE and PSNR values. This means, the longer the character of the secret message will affect the quality of the stego-image.

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