DIVISIBILIDAD 1º ESO

Teorema de Pitágoras ( con Geogebra)

Teorema de Pitágoras (con Geogebra)

Aquí tenéis una demostración del teorema de Pitágoras hecha en

Para ver el applet pincha AQUÍ

Equations 1º and 2º ESO

Paris is well worth a mass.

When his cousin Enrique III, the last of the Valois dynasty, named him his successor, Enrique IV already knew that the path to the throne was paved with thorns.

The religious wars had divided not only France, but all of Europe, and although he had been baptized catholic, he was educated in the Calvinist doctrine, and suffered in his own flesh. He already remembered how, after spending four years reigning over France, he had to renounce his faith and embrace the catholic doctrine again so that Saint Liga of Paris would accept him as king.

The disputes of power against the catholic Felipe II continued years later and, while he read the letter that his secretary had brought him, Enrique IV was astonished by the talent of Francois Viete to interpret the ciphered messages that the Spanish used to communicate within themselves.

He closed his eyes and tried to remember some notion of algebra that Viete had taught him. He remembered that he used the consonants, B, C, D…, to supplement the known quantities, and the vowels, A, E, I…, the unknown.

(c) Translation by Braden Williams.

AICLE UNIT LINEAR EQUATIONS (1º ESO)

AICLE UNIT EQUATION. CAN YOU GUESS? (2º ESO)

Algebra 1º and 2º ESO

BEFORE READING

What does Heraldy study?

Can you think of any elements that normally appear in coats of arms?

What can they mean?

Coat of Arms

Once upon a time, there was a knight in shining armour who was riding his beautiful black horse up the hill towards a castle. One of the castle guards was going to stop him to ask him his name, when the sergeant ordered him to let the knight in.

The love of the Moon

Christopher Columbus’ ship was shipwrecked for a short time in the island of Jamaica. His men threatened mutiny, and to compromise the situation, the indigenous, tired of exchanging little mirrors and accounts, refused to supply them with food.

The situation was hopeless and Columbus, to calm down his men, promised them food and a meeting with the chief of the indigenous people that same night.

-You know that you have all angered me with your poor cooperation, I will make the moon turn red with blood and then it will dissapear!

The indigenous chiefs looked at the moon to make sure the threats of Columbus were real, terrified, they asked him to resurrect the moon, promising to continue bringing food to him and his crew.

Columbus moved his arms, as if he were calling someone, and assured them:

-The moon will appear new this same night, but if you take back your word again, it will return to how it was.

After that, he returned to his quarters satisfied, congratulating the men for bringing the Ephemerides of the famous mathematician Regiomontanus, who predicted the eclipse that just happened.

Regiomantanus also wrote about angles, and measuring in degrees, minutes, and seconds.

Practice here

Working with Lecture

Unit Conversion by Braden Williams

UK Unit chart

Exam exercises

Between divine and human proportion.

A monk called Luca Pacioli wrote a book titled «The Divine Proportion» and asked Leonardo Da Vinci to illustrate it. When the artist finished all the drawings Luca examined them and said: «Your work is fantastic.» «Thank you father Pacioli » replied Leonardo. «Your book deserved that and more.» «I was right when I decided to ask you to illustrate my book because I knew you would love the theme of proportions. You showed me the sketch of the Vitruvian Man you drew and I was really impressed » said Pacioli.

Da Vinci explained that Vitruvio was a roman architect who had written about human proportions. These proportions are considered the canon of art, «Did you know that the distance from your elbow to your fingertips is a fifth of your height?» said Leonardo. «And the distance from your elbow to your armpit is an eighth of your height? And did you know that the length of your hand is a tenth of your height?»

Proper and Improper Fractions

The four fours

Srinivasa Ramanujan was an Indian mathematician from the 20th century. He was called “ the friend of numbers.” He had a natural ability with numbers and was very famous in the scientific world for that reason. When he was a child, he invented a game to entertain his brothers while they were waiting at Madras train station.

There was a train with four coaches and a steam engine in front of them. Every coach had the number four on it and the steam engine had the number one.

In the Red

Fu Chang was a young man who lived in China a long time ago. He wanted to work for the government so he took an exam to get the job. He was sure he`d pass the exam because he was very good at writing literature and poetry.

During the Tang dynasty (618-907 AD) it was very difficult to get a post in the government but if you passed the exam you could earn a lot of money and have a higher social status.

What comes after Thursday? Thursday!!!

It was a very cold Christmas day of the year 1582 and Pope Gregory XIII was talking to Christopher Clavius, a Jesuist who was very upset at that moment:
«Oh, please, Your Holiness, let me explain the changes in the calendar to the people,» said Christoper.