<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n"^^ . "The purpose of this research was to see correlation between self-efficacy for content mastery and teacher’s performance, as well as correlation between English mastery and teacher’s performance in using English at national plus schools. The sampling technique was purposely random sampling. Data were collected using questionnaires that were given to the teachers to test self-efficacy for content mastery and performance. The English ability was collected through documents such as TOEFL and other equivalent documents. Using SPSS, the results showed that mathematics teachers had high self-efficacy in mastering the contents, more than sufficient English ability, and high performance. There was a positive correlation between self-efficacy in mastering the contents and teacher’s performance. Furthermore, it had been obtained also a positive correlation between English ability and teachers’ performance.\r\n\r\nKey words: self-efficacy, mathematics, English, content, teacher, performance\r\n\r\n"^^ . "2011" . . . "Department of Mathematics Education, Yogyakarta State University"^^ . . . "PROCEEDINGS International Seminar and the Fourth National Conference on Mathematics Education"^^ . . . "9789791635370" . . . . . . . . . . "Daniel"^^ . " Ismail "^^ . "Daniel Ismail "^^ . . " Hidayat"^^ . "Dylmoon"^^ . " Hidayat Dylmoon"^^ . . "Department of Mathematics Education, Universitas Pelita Harapan, Tangerang"^^ . . . . . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Text)"^^ . . . "P - 28.pdf"^^ . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Other)"^^ . . . . . . "small.jpg"^^ . . . "Mathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools\r\n (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #1015 \n\nMathematics Teachers’ Performance In Teaching Using English At Secondary National Plus Schools \n\n\n" . "text/html" . . . "KNPM 2011" . .