Scientific Notation and Approximations Bulletin Solutions

Are you enjoying your long weekend? I hope you'd found some time to practise with the exercices I gave you ;)

If you want to check your answers, you have the chance to download the bulletin with all the exercices solved by clicking ¡¡here!!

Also, if you find yourselves into trouble with the solutions (because there's something you don't understand or, maybe, just maybe, because I got confused and copied something wrong...) you can post a comment asking anything you want me to review or explain ;)

We have 4 sessions left before our EXAAAAM. Next Wednesday, you'll learn about Irrational numbers and, finally, next Thursday I'll tell you about rean numbers intervals.

Next week (Monday or Tuesday), I'm planning to bring the laptops to class so I can finally explain you how to create an entry using maths expressions ;)

Here's one of the best videoclips of the last year! ;)

30 Seconds To Mars - Hurricane

Enjoy!!

Challenge 04

I'm sorry for the delay in uploading the new challenge....  This is one of the best!! :D

If you prefer the printable-pdf version you just have to follow this link ;)

Remember! This time only the first 7 correct answers will be honoured with a positive! :)

DEADLINE: Wednesday, November the 2nd.

How should you create your answer? if you download the challenge image, you'll be able to modify it using paint, gimp, or any similar image-processing software ;) Once you've succesfully answered the riddle, don't forget to post a comment here telling you've solved it and what your impressions are. Then, send your answer to my e-mail account ;)

Good luck!!!!

(This song is from the same band as the one you discovered yesterday)
XDDD)

Halloween Themed Session!!

Hi there!

It's been quite nice to find out that you've enjoyed today's lesson  ^_^  I don't want to lie to you; it wasn't an easy one to prepare, but the final result worth the (MY) effort. You happen to be smart students, so I'm sure you all understand that these "special-themed" sessions will only be possible if we keep on working on schedule ;)

So; let me make my point through an example: the better you behave, the less spanking you will get XD. I hope you'll give me the opportunity to try new games/activities from now on. And remember: if you had behaved better, you would've had the chance to experience new and/or different stuff earlier ;P

Enjoy your long weekend!! We'll meet again next Wednesday (one week prior to our next EEXXAAAAAMMMM!!!)

PS: Allo, Andrés...how are you feeling today? Are your multiple diseases & ilnesses disappearing? :)

Maximum The Hormone - Zetsubou Billy ("Death Note" Anime Soundtrack)

 

The Horribly Slow Murderer with the Extremely Inefficient Weapon

 Would you like me to share with you the music I've played this morning?

- OK, click here to get the music I played yesterday ;)

A SO AESY LESSON

Today we correct the homework first(Andres was ill so there were no shouts of EXAM or HOMEWORK) and then Mario explained us the truncation, overapproximation and round. I look in You Tube a video of that in Barrio Sesamo but i don't find any video becouse it is to easy for them, so i make one for you:

Then we make some activities in the homework sheet and we read a page explaining us that, i think all the people in the class understand the lesson and we behave more propierly. We make the vote of the strike and if the information i have is not wrong, we haven't got school the thursday because we "win" it.We have from homework the activity sheet the teacher Mario give us.

TODAY LESSON

HII CLASSS!

TODAY WE HAVE CORRECTED THE "EEXAAMM!" THAT WE DID THE LAST DAY, IT WAS A LITTEL BITE DIFFICULT MARIO! YOU AND YOUR TRAPS IN THE EXERCISE 4!
MARIO YOU HAVE A LOT OF PACIENCE, BUT HAVE A LITTLE (PIEDAD) OF US AND DO THE TRUE EXAM NO SO DIFFICULT PLEASE, CALSS WE HAVE TO TALK LESS!
NEXT WE PLAY A MEMORY GAME, IT WAS FUN AND EXCITING, I LIKE THE THINGS THAT WE DO, NO BORRING EXERCISES AND THAT THING...¡!

I WANT YOU TO SHOW THIS VIDEO: AJJAJA IT IS VERY FUNNY. YOU HAVE TO STUDY TO TRY TO DON´T HAVE THIS JOBS IN THE FUTURE. ENGOY IT;))

Sorry fans of DJ Santonio and DJ Mi Primo, i thought that andres have upload the remix but he didn't because was ill. Here you have the video:

I know the video is a patatoe but concentrate on music that is bad but not so much

Scientific Notation

Hi class!!! I don't know very weel what I have to do but I go to start.

Today in class we studied the Scientific Notation.

A number with a scientific notation has always two parts:

- A decimal number n verifying that _

- A power of 10 with an integer number as exponent.

For example: 300.000.000= 3·108

Then we have done some exercise about the scientific notation,that are: Page 42 (13-15)

13.a)493000000= 4'93·108 d)12'00056= 1'200056·10

b)315000000000= 3'15·1011 e)253=2'53·102

c)0'0004464= 4'464·10-4 f)256'256= 2'56256·102

14.a)0'247·108/ 2'47·107

b)24'7·108/ 2'47·109

c)0'247·10-8/ 2'47·10-9

red= important things

blue= the exponents

I think that that's all:))

I put some videos to entertainment:P

http://www.youtube.com/watch?v=wduNKViP3bY

http://www.youtube.com/watch?v=NqsqM8OolIY&feature=related

http://www.youtube.com/watch?v=F9HQeKv6VyE&feature=related

A Freshly squeezed Riddle!

Ok guys, here's your new challenge!! :D

If you prefer the printable-pdf version you just have to follow this link ;)

Remember! Only the firs 6 of you to answer the challenge will get a positive mark ;)

Ok, but... how should I create my answer? It's quite easy...  if you download the challenge image, you'll be able to modificate it using paint, gimp, or any similar image-processing software ;) Once you've succesfully answered the riddle, don't forget to post a comment here telling me you've solved it and then send the answer to my e-mail account ;)

Good luck!!!! Your game has started...

(This 80's song is called "The Riddle" and it just seemed appropiate for the occasion :P )

And there's music in the air...!

Hi there!

Iranzu and Maite have uploaded some videos where I reckon that the music (ie, the SOUNDTRACK) is quite important... don't you think so?

One year ago I went to the movies to experience Christopher Nolan's final masterpiece: INCEPTION ("Origen" if you prefer the spanish translation), a film where Hans Zimmer's score is as important as the acting, the cinematography, the script or the editing.

So, I'd like to share with you this video called ANIMALS!. You should watch it twice (the second time with no music at all). You'll notice that music is, sometimes, the best way to transmit and express emotions, isn't it???  :D

Be seeing you!!!!!!

EASY PEASY LEMON SQUEEZY

Hi guys!!!!! I'm Iranzu(Anzu!... for some of you...) and i don't know if this is going to work but there it goes...

Today in class we have corrected the exercise that Mario told us to do for homework (the first one of the sheet). Then we've done the letters a, b, d, f, g and h (i think...) and Mario told us to do the rest to practise this HORRIBLE POWERS!!!! =D
So... i don't know what else i can tell you so i leave you this video...

(i don't know if you can see it, because i didn't know how to download videos from youtube so... hahahahah) ENJOY IT!

NEXT TO THE END

here you have a spanish trailer i have found in you tube :)

i thought is the best trailer of the world...

WATCH THE VIDEO WITH THE MUSIC HIGH PLEASE

BINGO Session!

Hi guys!

I've just finished checking your Bingo cards, and we do have a WINNER COUPLE!! Tomás and Íñigo missed their glory just because of 1 mistake (don't you worry boys, you're at the silver position ;P )

And the winners are... Androcles & The Lion!! I guess you all know who I'm talking about  :D  Tomorrow I may bring you some sweet so you can feed yourselves in your break :P

I know some operations were a little tought, but today you've practised a lot! Good job! ;)

I'd like to publish here the videos we enjoyed at the end of the class:

1) Eva Hache's monologue about professions (and mathematicians!)

2) That poor-guy-video who loses 15.000$... Remember, maths are quite important if you're willing to become a wealthy person :P

Homework assignment: Exercise 1 from the "Lemon" sheet I gave you.

Tomorrow we'll work on that kind of exercises (the ones on the sheet) and that session will be our last powers session (OH YEAH!). 

¡¡Exam!! (you all must imagine now Andres' face) date: after some recalculations over our schedule, this unit exam will take place on november the 9th (unless there's any kind of trouble about that date: I mean, exams from other subjects, or whatsoever...)

Be seeing you!!

PD: just a classic spanish Rock song  to end this post (dedicated to Magan`s nº1 fan: Tristán. With all my heart XD)

:)

I LOVE THIS VIDEO!! ENJOY IT :)

 

(sorry I can't find it in English )

Correcting exercises...

Hi class, I'm Maite :)

Today we haven't done any special, we have corrected the exercises of last week (56, 57, 60 and 64).

In the exercise 64 Mario has explained us that:

a) (5 2 x 25 2)3 = 5 6 x 25 6 = 56 x (52)6 = 5 6 x 5 12 = 5 18

* We can't do a multiplication of two powers if they don't have the same base, but in this    case 25 is a multiple of 5, so it can be simplyfied as 52.

So the multiplication remains as : 5 6 x (5 2)6

We don't have finished the exercise because we have angered Mario with our      behavior.  
 Next lesson we should behave better !!!

  Red: the exponent

DJ Santonio $ DJ Miprimo

Hi class!! The saturday, DJ Santonio (Andrés) and DJ Miprimo (Rubén) are going to create a remix song. Is the debut of DJ Miprimo, because DJ Santonio has already created 3 remix songs. In can´t wait, Dee Jays. Upload the song as soon as posible. I want to see to Rubén singing. He is better than the singers that Mario likes. Please Andrés, tell Rubén to sing in the remix.

This is the video. Thanks Mario. Ahora me sale.

THERE IS A LOT OF HOMEWORK¡¡¡¡¡

Hellow class I´m Nicolas, Nkolapiz in the blog. Today we don´t do any specialy we only correct the homework:first Pablo secondly Andres and finaly Iranzu.
When we finish we made some exercise like, the exercice number 63 and Mario explain us how to simpificed powers like: 42=(22)2 ok.
Then we made mario to be angry an he said us to give the class.
Finaly mario explain us something about the sings.


The homework is exercices 56, 57,60 and 64

DO IT¡¡¡¡¡

The main activity of today where the excercises

The words that are in red are for having careful in the time you are doing the exercise and the blue ones are those that we can have more difficulty. These appear at the down part with it signification.

Today in class we've revised the four properties that ''tomiindependentzia'' explained in the last entrance, doing exercises. But doing the operations we have learned new thing like:


a) When you have to multiply/divide two different bases that are raised to an exponent and these operation at the same time is raised to an other exponent, you can't multiply the bases.

Example: (72 · 94)2 = 72·2 · 94·2 = 74 · 98

b) Also if we have to multiply numerators with different bases and are raised to an exponent we can simplify the base to have the same. Careful: if the base changes the exponent also!

Example: 25 · 43 = 25 · (22)3 = 25 · 26 = 211

c) When you finish a negative operation and the exponent that is raised to is even the base converts in positive. If it is odd it keeps negative.

Example: (-9)6 : (-9)2 = (-9)4 = 94
-(-2)3 = 23 = 8

Those where the three things we have to have in mind when we are operating.

even: that number that you can divide it by two (par)
odd: That number that you can't divide it by two (impar)


Something interesting: look all the things you can obtain with the pieces of a cube
!
http://www.youtube.com/user/cubert01?v=gidumziw4JE&feature=pyv&ad=6610669523&kw=de

Today we started the powers of exponent 0 ,1 and -1

first of all we do some example whith power of exponent 1

A exp.0=1 if a is not cero

Then we did some exersices whith exp -1:that is the inverse of the base

5 exp-1 =1:5

Then we revise 4 properties:

Product of powers: A exp.m x A exp.m=A exp. m plus m

Cocient of powers: A exp.m:A exp.m= A exp. m - m

Power of a power: (A exp.m)exp m= A exp. m x m

Power of a product:(A xB)exp.4= A x Bx A x Bx A x Bx A x B

THATS ALL THAT I UNDERSTOOD

I PUT SOME MUSIC ¨ PARA QUE OS MOTIVEIS¨

http://www.youtube.com/watch?v=kC9Ott_C44o&NR=1

http://www.youtube.com/watch?v=5P5lSk7Z9Rw

http://www.youtube.com/watch?v=lFxZGW2jZTM&feature=related

http://www.youtube.com/watch?v=Qup8QKo9_hA

http://www.youtube.com/watch?v=8eFzeqfl0Ps

The ISS

The International Space Station (ISS) is a habitable, artificial satellite in low Earth orbit. The ISS serves as a research laboratory that has a microgravity environment in which crews conduct experiments in many fields including biology, human biology, physics, astronomy and meteorology.

The station has a unique environment for the testing of the spacecraft systems that will be required for missions to the Moon and Mars. The station is expected to remain in operation until at least between 2020 or 2028.

A few weeks ago, the ISS take 600 photos of one of his orbit to pur planet. This is the result:

In the video if if you look carefully you could appreciate rays in the clouds and the lights in the cities. Wonderful, right?

And this is another video of the ISS. It takes photos to an aurora.

Amazing!

Santi Arana

Your new challenge!

Read the following challenge carefully!

I'm about to put myself into bed but I'm feeling a little bit nervous because tomorrow I'll be forced to ride on Port Aventura's Furius Baco (the fastest European Roller Coaster, turning from 0 kmph to 135 kmph in 3.5 seconds!) 

So, I'd like to take a pill for avoiding getting nervous tomorrow and another one to prevent me from feeling dizzy during the ride. I have 2 pills of each kind: the nervous-pills are kept in a red little box and the dizzy-pills in a blue box, but I drop them accidentally and now I have 4 pills and they all look the same! The doctor told me that if I take by mistake 2 pills of the same kind, I'd go crazy-bananas and all your marks could be changed to zero without noticing... terrible!

What can I do to take the proper dose of my medicine?

I have only six positive marks to share!! Try to make it snappy! ;)

Have a nice weekend, kids!

Unit 1: Results

Wow! You finally managed to gather 15 contributors :P

As I promised to you, I'm publishing here your marks. They are quiet good, aren't they?

AB01	7,3
AB02	9,2
AB03	8,8
AB04	8,6
AB05	9,7
AB06	6,2
AB07	9,7
AB08	10
AB09	8,7
AB10	9,6
AB11	8
AB12	10
AB13	7,7
AB14	10
AB15	7
AB16	7,7
AB17	9,4
AB18	10
AB19	7,1
AB20	10
AB21	5,5
AB22	6,7
AB23	8,7
AB24	9,8
AB25	8,8

Since some of you are obsessed with AC/DC, I'd like, if I may, to discover you some other classic rock bands. This one in particular, Meat Loaf, has the world-wide record of the third most-selling album of the american history ;) This classic song is from 1981, 30 years ago. Hope you like it!!

(Meat Loaf feat. Cher - Dead Ringer For Love)

2nd blog!

The 2^nd post in the blog.

Today, we began new theme, the secons, “Rationals numbers”,

First, we did powers of positive exponent, the difinition and an example.

With the fractions occurs the same, they can raise the numerator and denominator to the exponent.

Secondly, the sign of a positive exponent power , an example.

With an exponent pair- positive power/ With an exponent odd- negative power.

And Mario sent us the exercise 1. And I leave a video.

By: Eduardo Berasategui.

Let's get it started!

This is the first post on our blog's wall!!

I really hope this experiment we are starting fits well on your (sometimes) fuzzy minds :P

Today we've learnt about the irrational numbers (those numbers that can't be represented as a fraction). Do you remember the example we've worked with?

I'm not going to repeat here the demonstration I told you this morning, I only intended to show you that working with maths doesn't only concern to operations with numbers: there's a huge math-world to explore out there! And by math-world I mean there are many things which can't be explained using anything but mathematics:

(BTW, did you know that Futurama's screenwriters are indeed mathematicians, physicists and engineers? I promise I'll tell you about the hilarious maths-jokes you can find in this series)


So, don't forget about the DIN-A shaped sheets and the DIN-spiral!
 

I would like to finish this post with this incredible animated video showing, among others, the Fibonacci spiral (the one I told you that is quite a lot "smoother" than the DIN-A).

ENJOY YOURSELVES!

Let's get it started, in here....