D20 roller: roll a 20-sided die v0.1.0
Roll a twenty-sided die and see a number from 1 to 20 in large type. It is a quick way to pick a problem, a page or a student number in a class of twenty.
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How to use it
- The page starts with one die, each a d20. Press Roll or the Space bar.
- You get a number from 1 to 20, each with the same chance.
- Change How many dice or Kind of die at any time, or open the full dice roller.
Ideas for class
- Pick a problem from a list of twenty on the board, so no one knows which question is coming until the die lands.
- Give every child in a class of twenty a number and roll to choose who reads, answers or presents next.
- Practise teen numbers: roll and ask for the number in words, as tens and ones, and one more or one less.
- For older students, roll a number and find that percent of 20, or turn it into a fraction out of 20 and simplify it.
Related
Questions
What is a d20?
A d20 is a die with twenty faces, numbered 1 to 20. The number after the d is how many faces the die has, and an ordinary cube die is a d6.
Is every number from 1 to 20 equally likely?
Yes. Each roll uses your browser's secure random generator, so 1 and 20 come up just as often as 10. Roll many times and the counts even out, though never exactly.
Can I roll a different kind of die on this page?
Yes. Change Kind of die to a d4, d6, d8, d10 or d12, or change How many dice, and press Roll. The full dice roller page keeps your last choice for the next visit.
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