We will talk to a classroom with one laptop for every two students.
We would preview the site on the smartboard to explain it, and then allow the students to work collaboratively on the site in pairs. They would have the opportunity to talk about the concepts, and share their thinking as they worked through the activity. Using heterogeneous groupings would be really helpful to the lower kids, who will get the explanantion, and the higher kids will get the chance to expain their thinking. Homogeneous groupings would allow students to work at their own level and challenge themselves.
An idea would be to allow students to search the site in pairs to find math games that fit the current unit.