About this tool

Enter your class size once, and this tool lays out every combination of group sizes that could work, from pairs all the way up to larger teams. It solves the awkward moment when 27 students don't divide neatly into groups of four and you're stuck doing math on the whiteboard while the class waits. Instead, scan the options, spot the group size that leaves no one out or stuck working alone, and plan your grouping before the bell even rings. It's a planning step rather than a live activity — decide the size here, then group students however suits your lesson once class starts.