Dicey Choice
The magician has six numbered cups on the table. The spectator shakes a dice in a matchbox to choose a number between 1 and 6. The other five cups are lifted to show they are empty, but under the cup the spectator chose is a prize.
You can also view this trick on YouTube at https://youtu.be/OxR57oEGC0o
You can see all the previous magic lessons here.