Pedro's introduction

Hi, 

I'm Pedro. I'm thirteen years old. I've got a brother and a sister. They are younger than me. I'm the oldest brother. My father and my mother work a lot. We live in a regular house. I like playing videogames. I study at Instituto Politécnico Superior. It's a very big school. My favorite subject is math. 

What is your favorite subject? Why? and Why do you choose to study at Politécnico?