Author Archive for Carol Covin

A grandma to two, delightful seven-year-olds, one from each of my two sons and their wives. I am the author of a book of essays, based on interviews with 40 mothers and grandmothers, "Who Gets to Name Grandma? The Wisdom of Mother and Grandmothers." Proceeds go to bring a promising cancer treatment to clinical trials. I blog daily at http://newgrandmas.com, on how things have changed since I raised my grandchildren, how to get started writing your autobiography and fun things to do with your grandchildren.

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When Does a Heap of Sand Stop Being a Heap?

When Does a Heap of Sand Stop Being a Heap?

When Does a Heap of Sand Stop Being a Heap? Sorites Paradox or the Paradox of the Heap Something new to do when you are building summer sand castles. Tuning fork by John Walker stamped with note (E) and frequency in hertz (659) (Photo credit: Wikipedia) If you remove one grain of sand at a […]

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Fibonacci Sequence: It Started with Rabbits

Fibonacci Sequence: It Started with Rabbits

Fibonacci Sequence: It Started with Rabbits The Fibonacci sequence in terms of rabbits (Photo credit: Wikipedia) The Fibonacci sequence is a series of numbers in which each number in the series equals the sum of the two numbers before it. It was described by Leonardo Fibonacci, an Italian mathematician, in his 1202 Book of Calculations. He also introduced and popularized […]

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What Are Fractals?

What Are Fractals?

What Are Fractals? Animated fractal mountain (Photo credit: Wikipedia) Fractals If you try to measure something irregular, like the coastline along a creek, you will find that the shorter the measuring unit you use, a one-foot long stick instead of a three-foot-long yardstick, for example, the longer the thing will be, infinitely. Normally, in geometry, you […]

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Make Your Own Abacus with Popsicle Sticks

Make Your Own Abacus with Popsicle Sticks

Make Your Own Abacus with Popsicle Sticks How to Use an Abacus A Chinese abacus (Photo credit: Wikipedia) Although I studied Chinese in college and have been to China three times, most recently this summer, I had never learned how to use an abacus until researching this activity. If you understand simple addition and subtraction, you can […]

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