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Day 17

9/11/2013

1 Comment

 
You know what I think about every time this year? It's not about the horrible day 12 years ago. It's not about the great things this country has done.  It's not about the bad (and there is some!) in this country either.  It's about family and friends and doing good while we are here.  And having fun, too.  Love the ones closest to you. Do good things.  And have fun.  That and good food and you are set for a great life.
The chemistry class today observed two interesting phenomenon; one physical change in a substance and one chemical change.  It was cool. We also reviewed several examples of physical and chemical changes and practiced using the Periodic Table to identify elements.  Finally, we saw several examples of elements, compounds and mixtures.
The AP Biology students were busy taking their first exam of the year. I didn't think it was too tough but you never know.
And now, a chance for a prize.  A king has 3 sons and he wants to find out which one is the smartest. He sits them around a table and he blindfolds them.  He says, "Sons, I am going to place a crown upon your head. It is either made of gold or silver. I will also place into your hand a stick. When I remove your blindfold I want you to tap your stick upon the ground if you see a single gold crown. You will, of course, not be able to see your own. The first one of you to correctly tell me the color of their own crown and be able to explain your logic correctly shall win my kingdom." The king places a stick in each of his sons' hand and places a crown on their heads.  ALL THE CROWNS ARE GOLD. The blindfolds are removed and the sons immediately start tapping their sticks on the ground.  Soon, the youngest son, Mortimer, announces "I weareth a gold crown upon my head, Father! The kingdom is mine!" Mortimer was correct and so was his logical answer.  What was his explanation?


1 Comment
Uriel Nieves-Cruz
9/11/2013 12:54:38 pm

Say I'm son A, and the others are son B and son C. Everyone taps their stick upon the ground because they see gold crowns. I think to myself, "Assume I have a silver crown. Then B sees a silver and a gold, and B knows that C sees a silver. But C has tapped the ground, therefore I must have a gold crown." So I know that I can't have a silver, and therefore must have a gold crown.

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    Dan Button

    Teacher at West Valley High School

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