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# Author Archives: Kimberly Strauch

## NRICH

Starting in January, we began a “Site of the Month” feature. February’s site of the month is dedicated to: NRICH. NRICH is a team of mathematics teachers, who aim to enrich the mathematical experience for all. They provide engaging activities … Continue reading

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## The Hairy Ball Theorem

Originating author is João Pimentel Nunes The Hairy Ball Theorem is from topology, that part of mathematics that is concerned with the form of spaces. For the most part, this result came from work at the end of the 19th … Continue reading

## Mathematics of Planet Earth

Each month, we will feature a site that we feel is relevant to aims of the Klein Project. The first site of the month is dedicated to: Mathematics of Planet Earth (MPE). MPE is an initiative of mathematical science organizations … Continue reading

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## Calculators, Power Series and Chebyshev Polynomials

Originating author is Graeme Cohen. Of all the familiar functions, such as trigonometric, exponential and logarithmic functions, surely the simplest to evaluate are polynomial functions. The purposes of this article are, first, to introduce the concept of a power series, … Continue reading