I like one of the listed sites: Manga High, and one other website that I have used before: Mathplayground.com. Both of these sites have math and logic games and puzzles that challenge students to use reasoning and problem solving skills. It is important to make students accountable for their time and activity at a station. I liked some of the suggestions given, such as having students describe what the did and reflect on what they learned from the game or activity.
There were several math ipad apps in the EdTech list that I want to try and see whether I can incorporate them in a lesson.