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Excursion 10 : Letters "I can do math, up until they start putting letters in there," many people complain. What they are referring to, usually, is Algebra. Algebra uses letters in a powerful, powerful way to solve all sorts of problems. At first, it can be very confusing to see letters when we're used to seeing numbers. At Newton's Window, in coming weeks, we're going to help make it easier. But first, a little fun to try. This isn't really algebra, it's just a puzzle to try. Each of the five letters represents a number in the multiplication problem below. See if you can figure out which. ABC
Answer to Excursion 9: Traveling Trains - You will pass 5 trains. Did you miss a few? Most people guess 2 or 3. But the correct answer is 5: Out of your train window in Chicago, as you depart at noon, you will see the train that left Peoria at 10 a.m., arriving now in Chicago. As you travel toward Peoria, you will also see the train that left Peoria at 11 a.m., and at noon, and at 1 p.m., and the one that is about to depart for Chicago at 2 p.m., just as you arrive in the station. Now it seems simple. That's the way math is, sometimes looking at it from a different angle helps us see it more clearly. ~~~~~~~~~~~~~
Take me to more weekly challenges. Take me to the classroom challenge. Take me to SAT/ACT Tip #3, which shows more about translating words into math. |
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Great Math
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