Notes, abstracts, papers, exams and problems of Mathematics

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Ingles redaccion

Classified in Mathematics

Written at on English with a size of 1.22 KB.

Mobile phones should be banned at school
Everybody says that mobile phones should be banned at school because they usually interrupt the class. However, I think that mobile phones are necessary because it is possible you need them when there is an emergency.
On the one hand there are some arguments to ban mobile phones at school. They annoy a lot if they ring in class. Students sometimes pay more attention to the mobiles than to the teacher. This is really the reason that teachers give, but students nowadays don’t admit any reason because they want their mobile phones to listen to music at the end of the class.
On the other hand if teenagers can’t use the mobile phone they will be very unhappy, bored and it may be necessary for an emergency.
... Continue reading "Ingles redaccion" »

The stages of learning as Dienes

Classified in Mathematics

Written at on English with a size of 4.94 KB.

4.1 The stages of learning as Dienes
The learning process is a process based on abstraction, generalization and communication. This process of abstraction is to accurately analyze and Dienes identifies six different stages in it:
Stage 1: introduces the individual in the middle => Game Free
2nd stage: review, manipulate, get rules => Structured Games
3rd stage: becoming aware of the common structure to games made
4th stage: representation of the common structure graphically or schematically => Stage representative
5th stage study of the properties of abstract structure, which implies the need to invent a language => Stage symbolic
6th stage: Construction of axioms and theorems => formal Stage
Her pedagogical approach

... Continue reading "The stages of learning as Dienes" »


Classified in Mathematics

Written at on English with a size of 2.8 KB.

Natural disasters, how can we prevent them?

The Earth has suffered different types of natural disasters during its history such as tsunamis, hurricanes, floods and earthquakes, among others. We cannot avoid them from happening, but we can make them less damaging if we understand better why they happen and what can we do to prevent them. Some measures include:The creation of alarm systems that notify us from natural disasters. It is also important to take proper building plans if you are in an area of risk. Is it really necessary to have plans to evacuate people in case of emergency. They should also be carried out research after disasters and rehabilitation measures. Finally, we should take into mind that we are responsible in part for the... Continue reading "Ghjgh" »

Ingles 1

Classified in Mathematics

Written at on English with a size of 4.62 KB.

* Botas

1.-  1E 2C 3D 4A 5B


A: ____ could you clean up your shoes ?
(Make a request about the picture on the left)

B: __ohh, sorry, but i don´t have time, i´ll clean
Up in the afternoon



1.__first try not to put metal object inside
2._ remember to set up the clock
3._don´t forget to close the door before start up



1.What are robots used for?
They are used in difficult task for humans, are also used for research in universities among others.

2. How do computers make a life easier?
the computers make us a easier life because they help us to get information, to do transactions, pay the accounts amoung others, in this times, they are present always


** silla

1.- 1B 2C 3D 4E 5A


A: __please, put on your jacket_____________?
(Make a request

... Continue reading "Ingles 1" »

El Arte de Roma

Classified in Mathematics

Written at on English with a size of 3.05 KB.

John Duncan , went to a Chemical Company, he asked to David Wilson for the job, and he gover an oportunity to John. He investigate with Mary, his new coworker, and both were investigating the new paint that the company produced. The results were nasty, there were born baby rats, with six legs or no eyes...

John Duncan, at that moment, he lived in a very big house near the river. Then, one day, they are see in a newspaper, news that say, that baby seals were dead. Christine, was married with Simon, and she had a baby. Before this, John, confess the true.

And the factory was closed. And John sells his house, and at the end, he lives in a little house near the sea.

John Duncan - He was an old man, unfortunated and sociable.

Christine - The daughter... Continue reading "El Arte de Roma" »

Matrices: multiplication, rank, determinant, inverse and Rouche-Frobenius theorem

Classified in Mathematics

Written at on English with a size of 155.53 KB.

System Types
The systems of equations can be
classified by the number of solutions that can arise. According to that case may have the following cases:
· Incompatible system if it has no solution.
· Compatible system if you have any solution in this case can also distinguish between:
or compatible system determined when it has a finite number of solutions.
or compatible system when it admits an infinite set of solutions.
Fitting and classification:
Calculating the rank of a matrix for determining
1. We can rule a line if:.
· All the coefficients are zeros.
· There are two equal lines.
A line is proportional to another.
A line is a linear combination of others.
Delete the third column because it is a linear... Continue reading "Matrices: multiplication, rank, determinant, inverse and Rouche-Frobenius theorem" »


Classified in Mathematics

Written at on English with a size of 5.31 KB.

International Financial Reporting Standards (IFRS) are Standards, Interpretations and the Framework for the Preparation and Presentation of Financial statements (in the absence of a Standard or an Interpretation) adopted by the International Accounting Standards Board (IASB).

Many of the Standards that form part of IFRS are known by the older ñame of International Accounting Standards (IAS). IAS were issued between 1973 and 2001 by the Board of the International Accounting Standards Committee (IASC). On April 1st 2001, the new IASB took over from the IASC the responsibility for setting International Accounting Standards. During its first meeting, the new Board adopted existing IAS and SICs. The IASB has continued to develop Standards, called

... Continue reading "English" »

Números romanos

Classified in Mathematics

Written at on English with a size of 3.02 KB.


1. more happy than now

2. will destroy the Earth

3. I call Mr.David

4. I will be boring

5. will be depressed

6. you come back/ call me

7. are you going to do

8. eat meat / Saturday


1. doesn't leave/ leaves

2. I'm going to marry / will have

3. will snow

4. Are you going / will give

5. going to read

6. are you going to do/ i'm going to stay

i'm going to watch


1.get / will tell

2. will finish/ has been

3. are waiting/ stops

4. gets / will send

5. will be borrow / opens


1. ----/----/----

2. the/----/the

3. ----

4. ----/----

5. ----

6. ----/ ----

7. an/the

8. a/the/a

9. an/the/----


1. go / will be


3. call / see

4. work with your computer / will work

5. would / do / find

6. becomes/ will pass


1. If an alien came to visit me I will interview him

2. If I had enough money I... Continue reading "Números romanos" »


Classified in Mathematics

Written at on English with a size of 5.48 KB.

Different elements emit different colours when electric current is passed trough them. Different elements emit different colours due to the electron configuration in the atom.
Chemists use this theory to analyse materials for the presence of certain elements. As the chemists know the colours that are given off by various elements, they can determine the elements present in an unknown substance by the colours it emits. Traces off different metals are used in fireworks to produce the various colours when they are let off.
We can show this effect in the laboratory by heating various metals in a Bunsen flame. Wooden splints (soaked in water) are dipped in various salts (sodium chloride, lithium chloride, potassium chloride, barium chloride,
... Continue reading "Sss" »


Classified in Mathematics

Written at on English with a size of 7.61 KB.




net up-establecer

test probar

be able-ser capaz









in the wridde of-en el medio de


in from of-en frente de


next to-alado de

near to-cercano a


in-en (dentro de algo)

at-en (indica lugar fisico)


in october

in 1987

in a company

in the morning


at 6"oclok

at cisco

at a night


on friday

on october

.1Database Administrator
The Internet and electronic commerce (e-commerce) generate lots of data. Data must be stored, organized, and managed.
·Database administrators work with database software to find ways to do this. They identify

... Continue reading "Spd1501" »