To generate high-quality research, a reliable instrument is required. This study aims to develop an instrument that can measure mathematical dimensions of elementary school students appropriately, for use in mathematics learning on spatial geometry. Each statement item in Mathematical Anxiety Instrument was developed based on 3 learning aspects, namely Attitudinal, Cognitive, Somatic. This study uses Research and Development (R&D) method with a quasi-experimental design on geometry topic. The sample is 100 sixth grade students in an elementary school located in Karawang Regency. The instrument developed in this study is in the form of a questionnaire with closed-ended questions. The validity test analysis implies that 23 out of 30 items on the instrument are valid. This data is supported by Cronbach's Alpha test results, where all item has reliability value higher than 0.80 indicating that the instrument being tested has a very high-test reliability. Therefore, 23 items out of 30 items were developed into instruments for measuring mathematics anxiety that applicable in Mathematics learning activities. Thus, it leads to the conclusion that this mathematics anxiety questionnaire can be utilized as an instrument for future research.

This research investigates the results of studies related to the implementation of Science Technology Engineering and Mathematics (STEM)-based learning at elementary schools in Indonesia. Using the Systematic Literature Review (SLR) with meta-synthesis model, this research selects research articles related to STEM-based learning at elementary school in Indonesia from google scholar and google site as sources for primary data and secondary data, respectively. After reviewed through inclusion and exclusion criteria evaluated by quality assessments, 15 scientific articles published within 2015 to 2020 are analysed.  Findings show that many studies have great interest in developing STEM-based teaching and learning materials, while others focus on identifying the impact of STEM-based learning on various learning achievements such as creative thinking skills, critical thinking skills, basic questioning skills, and scientific literacy, and learning achievement in general.

Keterampilan Collaborative Problem Solving (CPS) merupakan suatu keterampilan abad 21 yang dianggap penting. Keterampilan CPS dapat dikembangkan melalui pembelajaran berbasis proyek. Namun dalam implementasinya, guru dan siswa sering mengalami berbagai kesulitan. Salah satu strategi untuk menyiasati hal tersebut adalah dengan mengintegrasikan kegiatan rekayasa. Melalui metode analisis deskriptif, penelitian ini mengungkap bagaimana Proyek Desain Rekayasa, yaitu pembelajaran yang mengintegrasikan engineering design dan pembelajaran berbasis proyek, mampu mengembangkan keterampilan CPS dan meningkatkan pemahaman konsep siswa. Empat belas orang siswa kelas delapan terlibat sebagai subjek penelitian, dimana siswa melakukan sebuah proyek untuk memecahkan suatu masalah secara berkolaborasi melalui aktivitas perekayasaan. Keterampilan kolaborasi siswa diukur melalui observasi selama pembelajaran berlangsung. Sedangkan, kemampuan siswa dalam pemecahanan masalah serta pemahaman konseptual siswa diukur dengan menggunakan pre-test dan post-test. Hasil penelitian menunjukkan bahwa Proyek Desain Rekayasa mampu memfasilitasi siswa untuk mengembangkan keterampilan collaborative problem-solving serta meningkatkan pemahaman konsep siswa mengenai sistem peredaran darah pada manusia.

Collaboration is now identified as an essential 21st century skills that make it become an important learning outcome. On the other hand, there is a growing demand to infuse engineering practices into science learning as it relies more on social involvement, such as collaboration, to solve problems. Thus research examining students' collaboration skills which emerge during activities involving engineering design is needed. Through observation method with rubric adapted from social skills of collaborative problem solving, emerging collaboration skills during collaborative engineering design processes are identified. The subject were 18 secondary students in 8th grade who were engaged in science lesson involving designing, constructing and testing analogical model of blocked artery and medical device to treat it. Varied level of participation, perspective taking and social regulation skills are evident throughout the lesson. Finding suggests that individual collaboration skills are dependent upon skills of collaborating partner

Objective - The study aims to explore the effect of digital Word of Mouth (WOM) marketing on customer purchase decision. Methodology/Technique - Types of research are a descriptive analysis and causal also measuring a conclusion by using a regression analysis and for hypothesis testing using t-test and F-test. Findings – The results of this research indicated that digital word of mouth marketing is effective and also has a influenced on customer purchase decision. The results show that digital word of mouth marketing included in the criteria of "Effective", this means that customer respondents had a positive view about digital word of mouth marketing at Dusun Bambu by using these indicators: Talking, Promoting, and Selling. Novelty - It is suggested that the company can increase the quantity of purchases in one transaction by cooperating with local tour and travel agents in order to raise the number of visitors. Type of Paper - Empirical Keywords: Digital Word of Mouth; Dusun Bambu; Marketing; Purchase Decision; Tourism. JEL Classification: M31, M37.