

Моя мама преподаёт математику в школе.
My mom teaches math at a school.
Вы давно преподаёте в этом университете?
Have you been teaching at this university for long?
Я бы хотел преподавать русский язык иностранцам.
I would like to teach Russian to foreigners.
"преподавать" is in the lesson "Verbs 9" (Level 21), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.