For the front of the room
Classroom dice
Pick a number from any range and show it large enough to read from the back. Turn on Classroom Mode and the number fills the screen.
Ready to pick from 1 to 30
How many
1
Picking without repeats
Rolling a die twice can give the same number twice, which is fine for a game and unhelpful for picking three different pupils. Turn on no repeats and each number is drawn once, like names out of a hat rather than rolls of a die.