How do you say "I am doing homework" in Spanish?
Las tareas are actually chores, tasks. Students' chores or tasks are homework, but if a woman discusses her "tareas," it means housework. It generally means things that you don't want to do.
A classier way to discuss your homework or chores is to call them, "deberes," the things I should do.
You should only say:
Estoy haciendo mis deberes = I am doing my homework
if you are actually doing the homework at the (same) time that you are saying the words.
Your mum asks "¿Qué haces (ahora)?"= "What are you doing (now)?"
so you reply: "Estoy haciendo mis deberes" = I am doing my homwork.
The reason for this is that the spanish natives only the present progressive tense using the present participle: 'haciendo' to descibe an action that is taking place at the time The English use present participles (gerunds) much more frequently than the Spanish.
The Spanish would use an infinitive eg nadar = to swim to translate this sentence:
I like to go swimming: = Me gusta ir a nadar (I like to swim = Me gusta nadar)
I hope this helps