Tuesday 14 of Frebuary 2012

Tuesday 14 of Frebuary 2012

Hi class!:) Yesterday was Tuesday 14th of february 2012 ,it was cloudy and a little bit rainy and snowing...but wasn´t a sad day becouse it was valentines day!For people in love happy valentines day;)

Today we started the lesson with a fotocopy to review the Arithmetic Sequences, then we have done the exercises of the fotocopy and for the book: 8, 9, 45, 46, 47 and 48. They were very similars and repetitives.Also we have laern what is an Arithmetic Progresion.

What is a Arithmetic Progresion?
-In the fotocopy:
Arithmetic Progresion is a sequence of numbers such that the difference of any two successive terms of the squence is a constant(i.e., always the same number).That constant is called difference (d). Had one term of an Arithmetic Progresion been given, you would have just to add that difference to move to the next term.
An Arithmetic Progresion is a squence such that:-In the wikipedia:
An arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 3, 5, 7, 9, 11, 13, … is an arithmetic progression with common difference 2.

If the initial term of an arithmetic progression is a₁ and the common difference of successive members is d, then the nth term of the sequence is given by:

There are some videos taht explain it:

http://www.youtube.com/watch?v=vlPHnGbKi9w

http://www.youtube.com/watch?v=d4jnVxLAkjo&noredirect=1


Listen to this song I love it!

http://www.youtube.com/watch?v=jCya1yiFFP4&feature=fvwrel

I hope you enjoy bye:)


Meritxell Ansotegui 3ºB.