AStudents’ skills in expressing mathematical ideas in various ways have not met the expectation. Teachers need to apply the learning providing students’ opportunities to present their mathematical ideas. Utilizing the Brain-Based Learning (BBL) approach with Autograph can help students develop their mathematical communication skills. The purpose of this study was to analyze the development of students’ mathematical communication skills. Twenty-eight 10th grade students in one of the high schools in Banda Aceh participated in the study. The instruments used were a mathematical communication skills test and the activity observation. Data were analyzed using descriptive analysis. The study showed that mathematics learning applying BBL approach with Autograph contribute to developing students’ mathematical communication skills.

The new curriculum (K13) requires a teacher to develop students’ ability in order to learn and fully understand Mathematics. The important abilities needed for a student in understanding Mathematics are the creative thinking and self-confidence. The certain study is essential in order to enhance students’ ability of mathematical creative thinking and self-confidence. Challenge-Based Learning is not only demanding a student to discover a solution to a problem, but also to be confident in what he has done. The qualitative method is used in this research to describe the students’ mathematical creative thinking ability and self-confidence. The subjects are six students chosen from 21 students of seventh grade at one of Junior High Schools in Aceh, Indonesia. They are the student with high, moderate, and low creative thinking ability. The research instrument is a test for creative thinking ability, a questionnaire of self-confidence and an interview guideline. The result indicates that the students with high and moderate level meet at least three indicators of creative thinking ability. They are also confident in solving the problem. In contrast, the student with low level did not reach any indicators of creative thinking ability and have poor self-confidence.  Keywords: Challenge-based Learning, Creative thinking ability, Self-confidence.

<p><strong>Abstract: </strong>To face the minimum competency assessment, preparation is needed by the school and teachers. This study aims to determine the implementation of school policies in preparing students to face the minimum competency assessment at the Elementary School 1 Peukan Pidie. The method used is a qualitative method with a descriptive approach and data obtained from observations, interviews, and documentation studies. The study results indicate that the minimum competency assessment is still a new thing for schools and teachers. Implementation of policies related to minimum competency assessment by the Elementary School 1 Peukan Pidie provides books to support minimum competency assessment and increase student learning hours. However, this policy cannot be implemented optimally due to the Covid-19 pandemic. Factors supporting the policy at the Elementary School 1 Peukan Pidie are the support and proactive attitude of the principal and the availability of supporting books for teachers and students.</p><strong>Abstrak: </strong>Untuk menghadapi asesmen tersebut tentunya diperlukan persiapan oleh sekolah dan guru agar siswa dapat mengikuti asesmen dengan baik. Penelitian ini bertujuan untuk mengetahui tentang implementasi kebijakan sekolah dalam mempersiapkan siswa menghadapi asesmen kompetensi minimum di Sekolah Dasar Negeri 1 Peukan Pidie. Metode yang digunakan adalah metode kualitatif dengan pendekatan deskriptif, dan data diperoleh dari hasil observasi, wawancara, dan studi dokumentasi. Hasil penelitian menunjukkan bahwa asesmen kompetensi minimum masih menjadi hal yang baru bagi sekolah dan guru. Implementasi kebijakan terkait asesmen kompetensi minimum oleh SD Negeri 1 Peukan Pidie berupa penyediaan buku penunjang asesmen kompetensi minimum dan penambahan jam belajar siswa. Namun kebijakan tersebut tidak dapat diimplementasikan maksimal karena kondisi pandemi covid-19. Faktor pendukung kebijakan di SD Negeri 1 Peukan Pidie adalah dukungan dan sikap proaktif kepala sekolah dan tersedianya buku penunjang untuk guru dan siswa.

2013 curriculum has mandated the importance of teachers and paying attention to aspects of diversity of students in learning, including intelligence. Based on the type of intelligence proposed by Gardner (2003), linguistic-verbal intelligence and mathematical logical intelligence are two intelligences that need to be considered by the teacher in mathematics learning, for example when the teacher prepares a mathematics learning tool. This study aimed to determine the effectiveness of mathematical learning tools based on linguistic-verbal intelligence and mathematical logical intelligence on material equations and linear inequalities. This study used the Plomp development model which consists of three phases, namely initial investigation, design, and assessment. The trial was carried out four times for students of class VII-8 in SMP Negeri 2 Banda Aceh. To determine the effectiveness of learning devices, criteria Kemp was applied, et al (1994). The results of the development showed that the mathematics learning tools based on linguistic-verbal intelligence and mathematical logical intelligence were effective. Because of that, this learning tool is worthy of being used by teachers in mathematics learning, especially in similarities material and linear inequalities.

The present study aimed to determine the productivity and nutrient digestibility of sorghum (Sorghum bicolor (L.) Moench) fodder given different levels of urine fertilizer in various planting media and harvest times. The study was carried out in June - September 2020 and used numbu variety of sorghum planted hydroponically at fodder phase. This study used a 2x4 factorial completely randomized design with 4 replications. The first factor was the harvest time at 5 days (H1) and 10 days (H2). The second factor was the planting media that included water medium as an internal control (M1), 12.5 mL/L of urine fertilizer (M2) and 25 mL/L of water medium (M3), and urea 20 mg/L of water medium (M4) as the external control. The urine fertilizer was derived from Ongole crossbreed urine fermented for 21 days. The density of sorghum seeds in the planting medium was 2.5 kg/m2. The observed variables included plant productivity and nutrient digestibility in vitro. Data analysis used ANOVA and continued with Duncan's Multiple Range Test to determine significance. The results showed that the addition of urine fertilizer and harvest time had a significant effect on plant height, length of fresh leaf production, dry matter, organic matter, and crude protein compared to those of the internal control. The H2M3 treatment provides a comparable productivity effect with H2M4. Meanwhile, harvest time affected dry matter and organic matter digestibility. It can be concluded that 25.0 mL/L of urine fertilizer in planting medium and harvest time in 10 days were able to increase productivity, dry matter digestibility, and organic matter digestibility of sorghum fodder.