10 Ways Teachers Use a Random Number Generator in the Classroom
By RithyVerse Studio · Updated October 12, 2026 · 3 min read
A random number generator is one of the simplest tools a teacher can keep on the board. It saves time, removes any sense of favouritism and adds a little excitement to routine tasks. Here are ten ways teachers use one, along with tips for making each work smoothly.
1. Calling on students fairly
Give every student a number from the class list and draw one when you want an answer. Students quickly learn that anyone can be picked, so more of them stay engaged. Turn on No repeats if you want everyone to get a turn before anyone is picked twice.
2. Forming groups
Assign each student a number, then draw numbers in turn to fill each group. It is faster than arguing over teams, and it mixes friendship groups naturally.
3. Choosing the order of presentations
Instead of volunteers or alphabetical order, draw the running order. Students who dread going first are reassured that it is genuinely chance.
4. Math practice with a twist
Generate two numbers between 1 and 12 for multiplication practice, or two larger numbers for addition and subtraction. Ask students to estimate before the answer is revealed. Changing the range lets you match the difficulty to the class.
5. Place value and number sense
Draw a number between 1 and 1,000 and ask students to round it, write it in words, find the nearest ten, or say what is one more and one less. Younger students enjoy the reveal animation as a hook.
6. Probability lessons
Run an experiment: predict how often a number from 1 to 6 will appear, draw it fifty times, and compare the results with the prediction. Students see that random does not mean perfectly even, which is one of the most useful ideas in early statistics. The dice roller and coin flip pages are handy for this.
7. Quiz and review games
Number the questions on a worksheet and draw which question the next team must answer. This keeps teams alert because they cannot predict what is coming, and it prevents you from always picking the easy ones.
8. Choosing a topic or prompt
For writing, discussion or debate, number a list of prompts and draw one. It saves time, and students often write more willingly when the prompt is the luck of the draw.
9. Classroom jobs and rewards
Choose the line leader, the helper of the day or the winner of a small reward by drawing a number. Everyone has the same chance, which supports a sense of fairness.
10. Teaching about fairness itself
Ask older students how a number generator can be made fair, then show them the ideas behind it in How Random Number Generators Work. It connects mathematics, computing and everyday decision making.
Tips for smooth use
- Number students by roll order and keep the list visible so nobody is surprised.
- Set the range to match your class size, for example 1 to 28.
- Use the Skip animation option when time is short.
- Draw once per question and resist the urge to redraw, so students trust the process.
- Let a student operate the tool now and then to share ownership of the activity.
Open the random number generator and try it on your next lesson.