Simple habits for making random groups work smoothly in real classrooms.
Say “groups of 4” and what the task is before you click. When the task comes first, the groups feel like logistics, not popularity.
If one group looks lopsided, re-shuffle in full view and explain why (“three groups of 5 works better than four of 4”). Open re-shuffles are trusted; quiet ones aren't.
Random groups work best when they're temporary. Regroup for every new activity so no child gets stuck in a “bad group” for weeks.
A class of 29 in groups of 4 leaves a remainder. Decide the rule in advance: some groups of 5, or one small group — either is fine if announced.
The tool runs entirely in your browser and nothing is uploaded. Still, project names — not surnames, photos, or student IDs — as good classroom habit.
A gentle line: random grouping is for learning tasks, not for deciding who sits out, who cleans up alone, or who gets privileges. Random assigns company, never consequences.
The smooth-grouping formula: task first → group size → shuffle live → show all groups → start the timer. Total time: under a minute.