Spinner, Math, Probability

Once before the time of “fidget spinners,” a spinner was frequently used to model random processes for student to feel the idea of uncertainty, data trends, and mathematical structures. Or, perhaps, this mathematical spinner can also serve the purpose of “fidgeting”?

The board by default has a diameter of 80mm, with both numbers (1, 2, 3, 4, 5, 6) and letters (A, B, C, D, E, F). The pointer is designed to be a bit loose for easy spinning and removal.

Here are a few questions for students to explore: (1). How likely does one get an even number? (2). What is the probability that one gets a prime number? (3). If I spin twice, how likely do I get a sum of 8? (4). If I spin five times, what is the probability do I get ALL prime numbers? (5) What is the probability does one get a vowel?

Reference:

Bu, L. & Fernandez, M. https://www.maa.org/external_archive/joma/Volume7/Bu/Spinner.html