Rallytable is one of the easiest structures to use in your classroom. It's much easier to get along with just one other person than to have to cooperate with 3 other people. Rallytable saves paper. You only have to run off half as many worksheets. Rallytable keeps you from grading as many assignments.
Students get instant feedback on how they are doing with a particular skill.
By teaching and coaching, students who had a minimal grasp of a skill develop a deeper understanding.