# Why circles?

## Related Articles

- Circles Rock! Boswell, Laurie // Scholastic Math;3/21/2005, Vol. 25 Issue 10, p12
Presents several mathematics problems about the area and circumference of circles.

- Pi Day Pies! Entin, Carli // Scholastic Math;3/14/2011, Vol. 31 Issue 10, p6
A mathematics quiz concerning circumference and area of circles is presented.

- Maths Medicine - 9. // Mathematics Teaching;Nov2013, Issue 237, p51
A mathematical problem involving a chord and circle is presented.

- Problems and Solutions. // Mathematical Spectrum;2014/2015, Vol. 47 Issue 1, p43
No abstract available.

- THE Creative Use OF Odd Moments No. 42. French, Doug // Mathematics in School;Jan2009, Vol. 38 Issue 1, p7
The article presents mathematical problems which stress the creative use of odd moments. They include an activity requiring the calculation of the sums of sets of five consecutive numbers, another asks to determine the perimeter of a rectangle in a quadrant, and one requests to find the...

- THE THREE CIRCLES PROBLEM. Holton, Derek // Mathematics in School;Jan2009, Vol. 38 Issue 1, p17
The author attempts to solve the Three Circles mathematical problem. He notes that scaffolding is one of the significant aspects of teaching. Also stressed is the need for algebraic knowledge in order to provide the justifications for any generalizations that might be made as the result of the...

- THE REGIONS PROBLEM. Holton, Derek // Mathematics in School;Nov2007, Vol. 36 Issue 5, p26
The article discusses how to solve the mathematical problem known as the "regions problem," which asks the solver how many regions a circle can be cut into by joining the points at which "n" number of lines can meet. Also discussed is the "four color theorem," which states that a map of the...

- The Pappus Chain Theorem and Its Applications to Geometry. SEUNG HEON LEE // Mathematical Spectrum;2014/2015, Vol. 47 Issue 1, p32
Professor Harold P. Boas, of Texas A&M University, USA, suggested, in the article 'Reflections on the arbelos', a Challenge problem related to arbelos. In solving the Challenge problem, I have found interesting features of the method of circle inversion and the Pappus chain theorem. This article...

- FIVE HISTORIC FORMULAS FOR PI. Osler, Thomas J. // Mathematics & Computer Education;Fall2009, Vol. 43 Issue 3, p250
The article presents the five earliest methods for determining the number pi. It states that the methods presented may be useful for students of calculus and real analysis and may interest some in the history of mathematics. Formulas for the derivation of the Gregory-Leibniz series are detailed....