My name is Sergio, i live in Oaxaca, Mexico, i am a certified english and spanish teacher, i studied in the school of languages of UABJO (oaxaca state university), in 2015 in the school "International house" i took the course "teacher training for the teaching of english as a foreign language" and also took the three TKT (teaching knowledge test) tests, by taken all these courses i got my certification as an english teacher, in 2016 i took the course "Diplomado en enseñanza del español a extranjeros" that certifies me as a spanish tutor for foreing people, i have been working as english teacher in several schools in oaxaca city and as a spanish tutor giving private lesssons to foreigners that visit the city of Oaxaca, i like to use the constructivist approach with my students