Analysis of Students' Mathematical Communication in Drawing Graphs of Multivariable Functions

Mathematical communication competencies help students to convey mathematical ideas orally and in writing. The purpose of this study was to analyze students' communication skills in drawing graphs of multivariable functions in advanced calculus courses. This type of research is qualitative with descriptive methods. The subjects in this study were 28 students of Mathematics Education class 4B. This study used a stratified random sampling technique to obtain 3 students consisting of high, medium, and low mathematics competencies. The data collection instruments used were the competency mapping test, evaluation test, and interview guidelines. The results of this study are (1) students with high competence excel at writing and making mathematical models, (2) students with moderate competence have advantages in three stages, but there are few errors in applying the agreement, (3) students with low competence make mistakes at the third stage due to wrong in formulating problems and designing problem-solving strategies.

Pengembangan Lembar Kerja Mahasiswa Berbasis ICT pada Mata Kuliah Kalkulus Lanjut

Pembelajaran berbasis ICT adalah pembelajaran yang dalam prosesnya menggunakan komputer, dalam hal ini yang akan dikaji oleh peneliti adalah lembar kerja mahasiswa berbasis ICT. Model pengembangan penelitian ini menggunakan model ADDIE dimana terdapat tahap analisis, tahap design, tahap pengembangan, tahap implementasi, tahap evaluasi. Tujuan penelitian ini adalah menghasilkan lembar kerja mahasiswa berbasis ICT pada mata kuliah kalkulus lanjut dan mengetahui efektivitas lembar kerja mahasiswa berbasis ICT yang dapat dilihat dari hasil belajar mahasiswa pada mata kuliah kalkulus lanjut. Subjek dalam penelitian ini adalah mahasiswa semester 2 tahun ajaran 2017/2018 Program Studi Pendidikan Matematika Universitas Ivet. Teknik pengumpulan data dengan menggunakan lembar angket validasi dan tes. Instrumen pengumpulan data hasil belajar adalah tes dan instrumen yang digunakan berupa lembar angket validasi untuk mengetahui kelayakan lembar kerja mahasiswa. Hasil penelitian ini adalah: (1) Pengembangan lembar kerja mahasiswa berbasis ICT melalui 5 tahap yaitu analisis, desain, pengembangan, implementasi, dan evaluasi. (2) Berdasarkan penilaian dari 2 validator yaitu validator ahli materi dan validator ahli media maka dapat disimpulkan bahwa lembar kerja mahasiswa berbasis ICT ini sudah layak dan dapat digunakan untuk mahasiswa yang menempuh mata kuliah kalkulus lanjut. (3) Efektivitas penggunaan lembar kerja mahasiswa berbasis ICT dapat dilihat dari hasil tes belajar mahasiswa, yang mampu memenuhi kriteria ketuntasan minimal yaitu 70. Kata kunci: pengembangan, lembar kerja mahasiswa berbasis ICT, kalkulus lanjut. ABSTRACT In the current era of globalization, an important and often preferred learning process is ICT-based learning. ICT-based learning is learning that uses the computer in the process, in this case the researcher will study ICT-based student worksheets. This research development model uses the ADDIE model where there is an analysis stage, design phase, development stage, implementation phase, evaluation phase. The objectives of this research are: (1) Producing ICT based worksheets on advanced calculus courses, (2) Knowing the effectiveness of ICT-based worksheets can be seen from the learning outcomes of students in advanced calculus courses. The subjects in this study were the semester 2 students of the 2018/2019 Academic Year of Ivet University Mathematics Education Study Program. Data collection techniques using questionnaire validation and test sheets. The learning outcome data collection instrument is a test and the instrument used is in the form of a validation questionnaire to determine the feasibility of student worksheets. The results of this study are: (1) Development of ICT-based student worksheets through 5 stages, namely the analysis, design, development, implementation, and evaluation. (2) Based on the assessment of 2 validators, namely the validator of the material expert and the media expert validator, it can be concluded that this ICT-based worksheet is feasible and can be used by students taking advanced calculus courses. (3) The effectiveness of using ICT-based worksheets can be seen from the results of student learning test, which are able to meet the minimum completeness criteria of 70. Keywords: development, ICT based student worksheet, advanced calculus.

Education Backgrounds of TV Weathercasters

In the early days of television, most weathercasters lacked formal training in meteorology and instead relied on forecasts from other sources. Over the decades, degreed meteorologists became more common. A third category has recently emerged: people with certificates in broadcast meteorology from Mississippi State University (MSU). This certification and the related broadcast meteorology degrees from MSU provide weathercasters with an understanding of meteorology without advanced calculus or differential equations. This study makes no judgment on how a weathercaster’s education background might affect their on-air presentations but notes these courses are required by most guidelines for meteorological degrees, as well as the American Meteorological Society's Certified Broadcast Meteorologist (CBM) program. This study conducts a unique survey of television meteorologists using the education history listed on their station's website or LinkedIn. The backgrounds of 421 meteorologists were examined with the equivalent of a 94% response rate. Overall, 21% had a broadcast meteorology degree or certification from MSU, 64% had a traditional meteorology degree from MSU or another institution, 2% minored in meteorology or had military training, and 12% listed no or a partial education background in the field. Another way of viewing the data is that the MSU broadcast program alone has nearly as many graduates as the four largest traditional programs combined in our sample. These results were further broken down for various subsets of weathercasters, resulting in statistically significant variations by market size, region, ownership group, and gender.