# Spinner, Math, Probability

## 3D model description

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

## 3D printing settings

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, along with dice.

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).

Lesson Plan and Activity
Pose a few questions about numbers, sum/difference of numbers, or even letters and allow students to spin the math out and discuss their findings.

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?
(6) If I spin twice, how likely am I going to get a difference of two?

• 3D model format: STL

## Creator

STEAM educator, learning from and working with K-12 STEAM teachers to explore new ideas of teaching and engagement. I firmly believe ART is at the core of STEM learning or all human learning! I owe my ideas and designs to the hundreds of K-12 children and teachers and university professors I have had the pleasure of working with, in multiple disciplines-- math, science,engineering language arts, social studies, early childhood education and more! All mistakes, of course, are mine! There is no warranty or liability whatsoever implied or explicit behind the designs or ideas. They are all posted for their potential educational values.

When working with children, please strictly observe all safety and health procedures! Please refer to the NSTA safety guides: http://www.nsta.org/safety/.

LGBU Contact: LGBU@SIU.EDU