My son had chosen to use Mathematical Reasoning for math this year (6th grade). We had gotten it for his younger sister and he liked it. Now that he is using it he absolutely hates it. He now wants more of a textbook and workbook set up like his science (Glencoe). Any recommendations? I am trying to not spend more that $75 on it since we had already bought math for him. But I can't force him to work through a book he doesn't like.