I have compared this product with many others, and keep coming back to it because it is simple to use, clear, thorough, and does not overwhelm the student with too much review/problems. Fewer problems on the page, greater work space, and visual explanations on the dvd make this a great choice for students who struggle with math. I love the consistent review of fractions/decimals/percents. These are so hard to retain and easily lost once the study of algebra begins. I don't use the manipulatives, but some may find them helpful.