Interactive Spinner
Classroom · Year 1–Year 6
Two to twelve equal segments. Tap to spin, read where it lands.
About the spinner
Tap the wheel to spin it. Set anything from two to twelve equal segments, and the result reads out above the wheel.
The segments are exactly equal, and the result is chosen before the wheel turns, so the odds are genuinely even. A spinner that picked a random angle and read off where it stopped would be very slightly unfair at the segment boundaries, which is not what you want when the lesson is about fairness.
Useful for probability, for picking a group at random, and for generating numbers in a game. Two segments make a coin flip; six match a dice.
The spin takes about a second and a half, which is long enough for a class to watch and short enough not to hold up a lesson.
How to use it on your whiteboard
- 1Tap the wheel to spin.
- 2Use plus and minus to change how many segments the wheel has.
- 3Read the result above the wheel, or in the toolbar.
- 4Tap Fullscreen so the wheel fills the board.
- 5Undo steps back to the previous spin.
Questions
- Is the spinner fair?
- Yes. Every segment is the same size and every one is equally likely. The result is decided first and the wheel is turned to match it.
- Can I put my own words on the segments?
- Not yet. The segments are numbered for now. For picking children by name, our random name picker is the one to use.
- How many segments can I have?
- Between two and twelve. Two is a coin, six matches a dice.