Maths warm-ups
Roll two d6 and ask for the sum, the difference or the product. Move up to d12 or d20 as the class gets confident.
Dice Roller, Coin Flip and Random Numbers
No more dice rolling under the desks. This dice roller throws up to six dice at once and adds them up for you, and it flips coins and picks random numbers too.
Open in full classroom screen
Free, no sign-up. Add more widgets alongside it.
How to use the dice roller
- 1
Choose how many dice to roll, from 1 to 6.
- 2
Pick the dice type: d4, d6, d8, d10, d12 or d20.
- 3
Roll and read the total on screen.
- 4
Switch to coin flip or random number whenever you need them.
What it does
Up to six dice
Roll 1 to 6 dice at once, from four-sided to twenty-sided.
Total shown for you
Every roll shows the total, ready for addition practice or a quick check.
Coin flip
Heads or tails for quick decisions and probability lessons.
Random number in a range
Set the range, for example 1 to 100, and get a random number.
Ways teachers use it
Probability lessons
Flip a coin 20 times as a class and tally heads and tails. Compare the results with what students predicted.
Review games
Roll to move on a review board, or pick a random question number from your worksheet.
Frequently asked questions
Up to six dice at once, choosing d4, d6, d8, d10, d12 or d20. The total is shown after every roll.
Yes. It also flips a coin (heads or tails) and picks a random number in a range you choose.
Yes. It runs in any modern browser on a smartboard, a projector or a classroom TV, so students can come up and roll.
No. ClassroomScreen is free with no sign-up. Open the page and roll.
More free classroom tools
Voice level chartShow the expected voice level and work mode in one place.Classroom scoreboardTeam scores for 2 to 6 teams, with a crown for the leader.Class reward jarA marble jar that fills toward a class goal, with confetti at the end.Classroom timerA big countdown with presets, three displays and a gentle chime.