Not only do we celebrate π (Pi) today, but it is also the Pi day of the century! Pi is a mathematical constant whose value we usually round to 3.14 when doing calculations. The next 2 digits in the sequence of this irrational number are 15 which is why we can call today 3/14/15 the pi day of the century. An irrational number is any real number that cannot be expressed as a ratio of integers. Irrational numbers cannot be represented as terminating or repeating decimals.
Pi has been represented by the Greek letter π since the 18th century. Pi is the ratio of a circle's circumference to its diameter. Circumference is the distance around the circle and diameter is the longest distance from one end of a circle to the other.
Click here to see formulas that use π
Click here to try some problems using π
And just in case you thought this blog was going to be about the kind of pie that you eat and are now very disappointed,hungry and bored,here are some delicious
Enjoy the pi and the pie!
As a teenager you may find it strange that I am urging you to learn your multiplication tables. Right now you are probably thinking that you have more difficult things to worry about like Algebra, Geometry or even Calculus. The reason I am bringing this to your attention is that during my years of tutoring junior high and high school students, I noticed that a large portion of them could not instantly recall the multiplication tables and this was causing them to make careless errors and spend much more time on the math problems than was necessary.
When you begin taking the higher level Math classes you are often so happy that you understand the difficult concepts that you may lose sight of the fact that you are making silly mistakes. Most teachers subtract points for these more basic math mistakes and unfortunately this could have a very negative impact on your grades. Then there are the standardized tests like the SAT and ACT that most of you will be taking. Those tests provide ample opportunity for you to make mistakes with basic stuff like multiplication! It is worth taking the time now to commit them to memory before losing anymore points on upcoming quizzes or tests.
Visit the Resources4Teens Quizlet page and use the flashcards and games to help you memorize your tables
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