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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What Is the Chance You’ll Get a Red M&M?

What Is the Chance You’ll Get a Red M&M?

What Is the Chance You’ll Get a Red M&M? Probability: Independent vs. Dependent Probability mass function of sum of two regular dice. (Photo credit: Wikipedia) Materials: Paper bag that you cannot see through 10 things of three colors, such as M&Ms, jelly beans, suckers, buttons, tiles Paper Pen or pencil Optional: change the number of […]

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Making Quicksand

Making Quicksand

Making Quicksand Non-Newtonian Fluid  Cinnamon sticks. (Photo credit: Wikipedia) I was testing one of my science experiments recently with a visiting grandchild. We were making oobleck, a non-Newtonian fluid characterized by the fact that it has some properties of a solid and some properties of a liquid. Quicksand is a non-Newtonian fluid. I’d made this myself when I […]

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How Long Is A Slinky?

How Long Is A Slinky?

How Long Is A Slinky? Measuring: Circles Metal slinky. (Photo credit: Wikipedia) How would you go about measuring the length of a Slinky? Could you do it with a ruler? If you didn’t know what pi is? What if you didn’t want to unroll and ruin the Slinky? Materials: Slinky Ruler Paper and pencil Optional: […]

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What Is the 80/20 Rule? Fun with Grandchildren

What Is the 80/20 Rule? Fun with Grandchildren

What Is the 80/20 Rule? Fun with Grandchildren Distribution – 80/20 rule  Pareto chart (Photo credit: Wikipedia Vilfredo Pareto was an Italian economist who noticed in 1906 that 80% of the land in Italy belonged to 20 percent of the people and that 80% of his pea pods came from 20% of his peas. An American engineer, Joseph […]

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