Simple Present vs Present Continuous

BEFORE YOU STUDY THIS UNIT, STUDY THE SIMPLE PRESENT AND PRESENT CONTINUOUS IN THE CONTENT TABLE OF THIS WEBSITE.

a. We use the simple present for the description of habitual actions, facts or permanent situations. For example:

I study Math every day.
She often swims after school.
They live in San Francisco.
Water boils at 100 degrees.
What do you usually do at weekends?
The computer doesn't work.

b. We use the present continuous for things that are happening at the moment of speaking, future plans and temporary situations. For example:

I'm listening to pop music at the moment.
She's working at a snackbar to get some money.
They're going to theater next week.
Where is she teaching Japanese?
You aren't playing football today.