education

What Is a Bonefish Diagram?

What Is a Bonefish Diagram?

What Is a Bonefish Diagram? Cause and effect French toast served at Mac’s Restaurant in Rochester, Minnesota. (Photo credit: Wikipedia) In 1968, a Japanese statistician, Kaoru Ishikawa, invented a diagram to simplify finding the cause of problems. It has been called an Ishikawa diagram, after its inventor, and a bonefish or fishbone diagram for its shape, […]

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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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