I found this tool to be a great asset in a mathematics classroom. It provides instant feedback to students with correctness of answers and providing back-up lessons for reference. Providing the opportunity for students to "Learn, Practice, Play, and Explore" will definitely allow for student knowledge growth. There seems to be a lot going on with the website, so I feel that can create distractions for students and can possibly lead them to drift away from the given task. Especially in the Explore section, students can easily click on a different grade level or a different subject area.
Is there a way to reduce the advertisements that appear on the top and sides of the pages? This adds to the distractions that can lead to students drifting away from the given task. I see that you can exit some of them out, but it will still come back once a student goes onto the next lesson/task. I like how the heading at the top of the page is the topic/subject. I also like the link box next to the top heading that allows students to get to the different sections of the lesson and guide forward or backward to other lessons.