Homework is given to us to help us learn how to solve a problem or learn about us, homework can be hard. Home work is not a fun thing but we learn something new everyday and homework is a part of that idea.
The way the Human brain works, information is retained through repetition and being exposed to certain things more often. In the case of school, most teachers will ask you to read a text beforehand, which you will try to remember.
When you are in class, the text is discussed or questions asked, which repeats the knowledge again, with your brain remembering more.
Finally, homework means you read a text again, think about it and try to answer questions, which is your third exposure to the knowledge your teacher wants you to have.
This maximizes the chances