SUMMARY
Salah satu faktor rendahnya penguasaan materi trigonometri adalah kurangnya pemanfaatankemajuan teknologi informasi dan komunikasi dalam menunjang pelaksanaan prosespembelajaran khususnya internet. Pembelajaran materi trigonometri di SMA saat ini masihbanyak yang menggunakan cara-cara konvensional. Konsep-konsep trigonometri jugadisajikan secara abstrak sehingga menyulitkan peserta didik dalam memahaminya. Penelitianini bertujuan untuk mengetahui efektivitas penerapan pembelajaran matematika berbasise-learning dalam kerangka laboratorium Teenzania materi trigonometri kelas X di SMA KristaMitra Semarang. Penelitian ini memuat tiga variabel yaitu keterampilan proses, motivasibelajar, dan prestasi belajar. Pengambilan data keterampilan proses melalui pengamatan,motivasi belajar dilakukan melalui pengamatan dan angket, sedangkan prestasi belajarmelalui tes tertulis. Analisa data meliputi uji ketuntasan (One Sample T Test), uji pengaruh(regresi linear/ANOVAb), dan uji perbedaan (Independent Sample T Test). Hasil analisisdata menunjukkan semua variabel melebihi ketuntasan minimal 70, yaitu nilai rata-rataketerampilan proses 78,24 , motivasi belajar = 79,86 , prestasi belajar 79,6. Terdapat pengaruhpositif variabel independen terhadap variabel dependen, terbukti dengan nilai signifikansikurang dari 5%, dan terdapat perbedaan sebesar 11,13 dari rata-rata nilai prestasi belajar kelaseksperimen (79,6) dan kelas kontrol (68,47).One of the factors inf luencing the understanding of trigonometry material is the lack of technology uti-lization especially internet in order to support the learning process. Trigonometry material in senior highschools is mostly taught by conventional methods. Further, the concept of trigonometry is given in anabstract concept that it makes students hardly understand the material.This research is intended to exa-mine the effectiveness of e-learning mathematic www.teenzania.com in Teenzania laboratory on trigono-metry material for X grade students of SMA Krista Mitra Semarang. Three variables included in thisresearch were processing ability, study motivation and achievement. The data for processing ability weregathered from a written test, the study motivation was obtained from observation and questionnaire, andthe students achievement was indicated from a written test. The analyses of the data include One SampleT Test, regresi linear/ANOVAb, and Independent Sample T Test. The results show that all variablesexceed the passing grade of 70 in which the average achievement was 78.24 for processing ability, 79.86for motivation, and 79.6 for students achievement. There was a positive ef fect from independent variableto the dependent variable proven by the significant rate that was less than 5%, and a gap of 11.13 betweenthe average of grade in experimental group (79.6) and controlled group (68.47).