domingo, 23 de febrero de 2014
sábado, 22 de febrero de 2014
Khan Academy: Las fracciones
Esta es la lista de los ejercicios sobre el tema 7 de introducción a las fracciones que tenéis que hacer en Khan Academy:
- Recognizing fractions 0.5: tenéis que decir que fracción representa cada dibujo que va apareciendo.
- Fraction word problems 1: estos problemas sólo requieren entender bien la definición de fracción como parte de la unidad.
- Recognizing fractions: en este tenéis que decir cuál es el numerados/denominador de la fracción.
viernes, 31 de enero de 2014
So you guys want to know where I was born II
Seems the previous clue was no challenge for you guys, so let's see if I can make this one a bit more interesting. You're going to work a little bit of math to get this one. The next clue is ciphered and I've used a simple substitution cipher, based on a number (called the key), to write it.
So you understand what this means, here is an example: suppose you know the key to your cipher is 4, then you would substitute the letter A by the fourth letter in the alphabet, D, the letter B by the fifth letter, E, the C by the sixth letter, F, and so on and so forth. So, instead of HELLO, you would write KHOOR. If it helps, you can tell me how you would write GOODBYE in this cipher in a comment, and I'll tell you whether it's fine.
Now, for the actual clue: GUR PBHAGEL JURER V JNF OBEA VF N ERCHOYVP. And to get the key to the cipher: multiple the amount of divisors the number 120 has by the tenth smallest prime number, now add the digits of the result and use that as your key.
Good luck, hopefully you'll get it as fast as the previous one.
lunes, 27 de enero de 2014
Khan Academy: Los números decimales
Esta es la lista de los ejercicios sobre números decimales que tenéis que hacer en Khan Academy:
- Decimals on the number line 1: tenéis que colocar el punto naranja en el número que os indican o señalar qué número representa el punto naranja.
- Decimals on the number line 2: hay que colocar el punto naranja en el número que os indican o señalar qué número representa el punto naranja. Cuidado con la escala.
- Estimation with decimals: redondear números decimales usando problemas.
- Adding decimals: sumas de decimales.
jueves, 23 de enero de 2014
So you guys want to know where I was born...
As promised, here's the first clue. These are pictures of all the cities where I've lived for more than six months:
If you click on the slideshow you can see a bigger version.
So, your first task is to find out the names of the cities. I suggest you start with the country, it should be easy, if you look at the pictures carefully.
ETA: This is what we are gonna do, write an entry here telling me what country you think each picture belongs to and I'll tell you whether your guess is right or wrong. When someone has the six countries right, I'll give you the next clue.