Ohio Resource Center
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Welcome to Stella's Stunners

Welcome to the ORC Stella website. The core of this collection is a library of more than 600 non-routine mathematics problems known as Stella's Stunners to be launched set by set over the coming months. The problems range from simple visual problems, requiring no specific mathematical background, to problems that use the content of Pre-Algebra, Algebra I, Geometry, Algebra II and Trigonometry, up through Pre-Calculus.

The Stella problems are not typical textbook exercises. They are considered "non-routine" problems because the methods of attacking them are not immediately obvious. Because these problems can supplement and enliven traditional mathematics courses in a variety of ways, we have included materials to assist in using Stella problems in your teaching:

The Stella problems were collected over many years by Rudd Crawford, long-time mathematics teacher at Oberlin High School, and have been used by a number of teachers across Ohio. It is a pleasure to make this problem library available for you to use with your own students. Rudd welcomes any comments or questions you may have, and you may contact him using our contact page.