Abstrak. Penelitian bertujuan memberdayakan keterampilan argumentasi untuk mendorong pemahaman konsep siswa pada materi terapung dan tenggelam. Penelitian difokuskan pada 1) identifikasi keterampilan argumentasi yang dapat diberdayakan dan 2) identifikasi pemahaman konsep siswa setelah diberdayakan keterampilan argumentasi. Populasi penelitian adalah siswa SMA kelas XI di kota Bandar Lampung. Pemilihan sampel menggunakan teknik cluster random sampling untuk 2 kelas. Hasil penelitian menunjukkan bahwa siswa fokus memberdayakan keterampilan argumentasi (elemen claim) tanpa memberdayakan elemen keterampilan argumentasi lainnya, hal ini berdampak pada lemahnya pemahaman konsep materi terapung dan tenggelam siswa. Idealnya pemberdayaan keterampilan argumentasi secara utuh berdampak pada perluasan pemahaman konsep siswa. Hasil penelitian ini menjadi rujukan untuk melakukan penelitian selanjutnya guna memperoleh perubahan positif memberdayakan keterampilan argumentasi yang secara langsung meningkatkan pemahaman konsep siswa menjadi lebih baik. Kata kunci: Pemahaman konsep, keterampilan argumentasiAbstract. Research aimed at empowering the skills of argument encourage understanding of the concept of students on material floating and sinking. The study focused on 1) the identification of weaknesses empowerment argumentation skills and 2) identification of students' understanding of the concept of after-powered argumentation skills. The study population was high school students of class XI of Bandar Lampung. Samples using cluster random sampling technique for the two classes. The results showed that the students have a tendency to focus empower all elements of the claim without argumentation skills, this affects the weak understanding of the concept of matter floating and sinking in students. Ideally empowerment argumentation skills as a whole have an impact on the expansion of students' understanding of the concept. The results of the study as a reference in making improvements in future studies in order to obtain positive changes empowering the skills of argument that directly improve students' understanding of the concept becomes better.

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The bound state solutions of Dirac equations for a trigonometric Scarf potential with a new tensor potential under spin and pseudospin symmetry limits are investigated using Romanovski polynomials. The proposed new tensor potential is inspired by superpotential form in supersymmetric (SUSY) quantum mechanics. The Dirac equations with trigonometric Scarf potential coupled by a new tensor potential for the pseudospin and spin symmetries reduce to Schrödinger-type equations with a shape invariant potential since the proposed new tensor potential is similar to the superpotential of trigonometric Scarf potential. The relativistic wave functions are exactly obtained in terms of Romanovski polynomials and the relativistic energy equations are also exactly obtained in the approximation scheme of centrifugal term. The new tensor potential removes the degeneracies both for pseudospin and spin symmetries.

The influence of implementation of interactive lecture demonstrations (ILD) conceptual change oriented toward the decreasing of the quantity students that misconception on the Newton's first law AIP Conference Proceedings 1708, 070007 (2016) Abstract. This research aims to reveal the student's conception and perception of Newton's Law. Method of this research is qualitative with the sample is taken using purposive sampling consist of second semester (25 students), fourth semester (26 students), sixth semester VI (25 students), and eight semester (18 students) IKIP PGRI MADIUN, which have taken the first basic physics and mechanics courses. The data was collected with essay questions, interview, and FCI test. It can be concluded that Mathematical language (symbol and visual) perception and intuition influence students conception. The results of analysis showed that an incorrect conception arises because students do not understand the language of physics and mathematics correctly.

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The application of minimal length formalism in Klein-Gordon equation with Hulthen potential was studied in the case of scalar potential that was equal to vector potential. The approximate solution was used to solve the Klein-Gordon equation within the minimal length formalism. The relativistic energy and wave functions of Klein-Gordon equation were obtained by using the Asymptotic Iteration Method. By using the Matlab software, the relativistic energies were calculated numerically. The unnormalized wave functions were expressed in hypergeometric terms. The results showed the relativistic energy increased by the increase of the minimal length parameter. The unnormalized wave function amplitude increased for the larger minimal length parameter.