Hasil untuk "math-ph"

Sian L. Beilock, Elizabeth A. Gunderson, Gerardo Ramirez et al.

People’s fear and anxiety about doing math—over and above actual math ability—can be an impediment to their math achievement. We show that when the math-anxious individuals are female elementary school teachers, their math anxiety carries negative consequences for the math achievement of their female students. Early elementary school teachers in the United States are almost exclusively female (>90%), and we provide evidence that these female teachers’ anxieties relate to girls’ math achievement via girls’ beliefs about who is good at math. First- and second-grade female teachers completed measures of math anxiety. The math achievement of the students in these teachers’ classrooms was also assessed. There was no relation between a teacher’s math anxiety and her students’ math achievement at the beginning of the school year. By the school year’s end, however, the more anxious teachers were about math, the more likely girls (but not boys) were to endorse the commonly held stereotype that “boys are good at math, and girls are good at reading” and the lower these girls’ math achievement. Indeed, by the end of the school year, girls who endorsed this stereotype had significantly worse math achievement than girls who did not and than boys overall. In early elementary school, where the teachers are almost all female, teachers’ math anxiety carries consequences for girls’ math achievement by influencing girls’ beliefs about who is good at math.

Elizabeth A. Gunderson, Gerardo Ramirez, S. Levine et al.

M. McClelland, Claire E. Cameron, C. Connor et al.

M. Ashcraft

M. Ashcraft, Elizabeth P. Kirk

Endong Wang, Qing Zhang, Shen Bo et al.

Erin A. Maloney, Gerardo Ramirez, Elizabeth A. Gunderson et al.

Talia Berkowitz, M. W. Schaeffer, Erin A. Maloney et al.

Geetha B. Ramani, M. Rowe, Sarah H. Eason et al.

J. Léon, J. Núñez, Jeffrey Liew

Macarena Suárez-Pellicioni, M. I. Núñez-Peña, À. Colomé

Randeep Singh, P. Mondal, M. Purkait

L. Musu-Gillette, Allan Wigfield, Jeffrey R. Harring et al.

Rachelle R. Bouchat

Linda J. Sax, M. Kanny, Tiffani A. Riggers-Piehl et al.

Y. Duong

Klas Modin, Milo Viviani

Point-vortex dynamics describe idealized, non-smooth solutions to the incompressible Euler equations on 2-dimensional manifolds. Integrability results for few point-vortices on various domains is a vivid topic, with many results and techniques scattered in the literature. Here we give a unified framework for proving integrability results for $N=2$, $3$, or $4$ point-vortices (and also more general Hamiltonian systems), based on symplectic reduction theory. The approach works on any 2-dimensional manifold; we illustrate it on the sphere, the plane, the hyperbolic plane, and the flat torus. A systematic study of integrability is prompted by advances in 2-dimensional turbulence, bridging the long-time behaviour of 2D Euler equations with questions of point-vortex integrability. A gallery of solutions is given in the appendix.

Anggitia Lutfiana Dewi, Eleonora dwi Wahyuningsih, D. Oktaviani

Tujuan penelitian ini untuk mendeskripsikan : 1) kemampuan pemahaman konsep matematika yang diajar menggunakan model pembelajaran MURDER berbantuan puzzle math dapat melampaui KKM. 2) kemampuan pemahaman konsep yang diajar menggunakan model pembelajaran MURDER berbantuan puzzle math lebih baik daripada peserta didik yang diajar menggunakan model pembelajaran langsung. Populasi dalam penelitian ini adalah peserta didik kelas VII Semester Genap SMP Negeri 12 Kota Tegal Tahun Pelajaran 2017/2018 yang berjumlah 183  peserta didik. Metode pengumpulan data menggunakan teknik dokumentasi, observasi dan tes. Hasil penelitian menyatakan bahwa : 1) kemampuan pemahaman konsep matematika yang diajar menggunakan model pembelajaran kooperatif tipe MURDER berbantuan puzzle math dapat melampaui KKM dengan KKM 55 dan ketuntasan klasikalnya mencapai 80%,  2) kemampuan pemahaman konsep matematika yang diajar menggunakan model pembelajaran kooperatif tipe MURDER berbantuan puzzle math lebih baik dari pada peserta didik yang diajar menggunakan model pembelajaran langsung dengan rata-rata kelas eksperimen 71,74 dan rata-rata kelas kontrol 39, 19. Kata Kunci: Model Pembelajaran Murder; Puzzle Math; Pemahaman Konsep Matematika.

M. Danesi, M. Danesi

Yufeng Lu, Ettore Minguzzi, Shin-ichi Ohta

We develop the theory of weighted Ricci curvature in a weighted Lorentz-Finsler framework and extend the classical singularity theorems of general relativity. In order to reach this result, we generalize the Jacobi, Riccati and Raychaudhuri equations to weighted Finsler spacetimes and study their implications for the existence of conjugate points along causal geodesics. We also show a weighted Lorentz-Finsler version of the Bonnet-Myers theorem based on a generalized Bishop inequality.