The homework is bad is to promote. To obtain knowledge without using a note if you are using memory. Practice that focuses on results by the thought process.
How bad is to promote the memorization. The knowledge gained through the use of reason, without the use of the memory. Doing exercises that focus on results, not process interesting.
Bad homework is to promote rote. Acquiring knowledge through the use of reason without the if using his memory. Exercises that focus on results without attention to the thought process.