Dice Roller
Roll any number of dice with 4 to 20 sides. Great for math games and probability.
About the Dice Roller
Misplaced dice are one of those small classroom logistics problems that eat more time than they should — a probability lesson stalls while three kids dig through the manipulatives bin. This tool puts one to six dice on screen, in six common shapes (d4 through d20), and rolls them with a quick animated tumble so the result still feels like a roll rather than an instant number.
It's built for the moments dice come up outside of a dedicated math unit too: picking a starting player, running a quick probability demo on the board, or settling a game during a transition.
How to use it in your classroom
- Set how many dice to roll using the slider, from one up to six.
- Choose the die shape: d4, d6, d8, d10, d12, or d20.
- Click Roll. The dice animate briefly before settling on their final values.
- When more than one die is rolled, the sum of all dice appears below the results automatically.
Tips from the classroom
- Use a single d6 with the on-screen pip face for early counting practice — the dot pattern is easier for young students to subitize than a printed numeral.
- For probability lessons on sums, roll two d6 repeatedly and have students tally the totals themselves before introducing the theoretical distribution.
- Project the tool during board games or stations that call for dice so groups aren't sharing a single physical set.
- Switch to a d20 for quick random selection — assign each student a number and roll to call on someone without it feeling personal.
Frequently asked questions
Can I roll dice with different numbers of sides at the same time?
No, all dice in a single roll use the same shape. Change the shape selector and roll again if you need a different die type.
Why do only six-sided dice show dots instead of numbers?
The pip layout matches a physical die face and is most useful for counting practice. Other shapes show the rolled number directly since there's no standard pip arrangement for them.
Is each roll truly independent, or does it avoid repeating numbers?
Each die rolls independently with no memory of past results, the same as a physical die — repeats and streaks are expected and are actually useful for talking about probability with students.