7th grade math

Hi Parents:
I have decided to change the percentage weight for the three kinds of work that the students do in math class.  It seems to me that the students have not been working hard on their homework because they know that a good test or quiz score can negate the homework score.The homework is where they actually practice the concepts we are learning, and if they do not do well on the homework, they will flounder eventually.  Therefore, I am weighing the homework at 30% of their grade and quizzes at 30% and tests at 40%.  I hope this will better reflect how they do on all math work.

Thanks,
Mrs. Wilson