19 de mayo de 2018

Area of triangles and parallelograms

Hello, hello!
As we're learning about the properties of polygons, we need to know what the area of a polygon is.


The area of a polygon is the quantity that expresses the extent of a shape. It is two-dimensional and is normally calculated by multiplying the length and the height of the shape.

The typical shape of rooms and other spaces are not just a rectangle or a square, so we'll need to add the areas of the shapes that compose them:

Other problem we may have is when the area we want to measure is a shape within another shape:

In this case, we need to subtract the area of the outside rectangle minus the area of the small one, in order to know the difference between them.

Area of a paralellogram

Paralellograms are always measured as if they were rectangles:

Area of a triangle

The area of a triangle is (height × width) ÷ 2.

Area of a Regular Polygon

The area of a Regular Polygon is the Perimeter x apothem / 2.

Here you have some games to practice on perimeters and areas:

I hope you found these useful!
Bye, bye, butterflies!

18 de mayo de 2018


Hello, hello!
In Maths we're reviewing what polygons are: every 2-D shape enclosed in straight lines.

Types of polygons worksheet


The perimeter of a polygon is the length of all the sides in a polygon.

Calculating the perimeter has several practical applications. A calculated perimeter is the length of fence required to surround a yard or garden.

If the shape is a regular polygon, then we don't need to know exactly all the sides' length:

It is common that not all sides are measured when the polygon is a complex shape, so you need to calculate the missing dimensions:

I hope you found these useful!

Bye, bye, butterflies!

14 de mayo de 2018

Spanish Culture in the 20th Century

Hello, hello!
As we've read in our books, during the first half of the 20th Century, Spanish culture emerged in what we call the Silver Age.
Many authors, artists and thinkers came forward and we're going to learn some more about them by researching about their lives and works.

We need to create a poster with the following information:

Here we have a spinning wheel to decide who's researching who:

The final list is:

Antoni Gaudi
Antonio Machado
Carmen de Burgos
Clara Campoamor
Federico García Lorca
Isaac Albéniz
José Ortega y Gasset
Josep Pla
Juan Ramón Jiménez
Luis Buñuel
Manuel de Falla
María Luz Morales
Maruja Mallo
Miguel Hernández
Montserrat Casals Baqué
Pablo Picasso
Salvador Dalí

Some examples

Biography posters examples

Biography poster example

We're going to learn soooo much!
Bye, bye, butterflies!

13 de mayo de 2018

Years of Civil war and Dictatorship in Spain

Hello, hello!
After the coup of General Francisco Franco, a horrible and vicious Civil War. In this entry you have a Study unit.

12 de mayo de 2018

Addition and subtraction of sexagesimal degrees

Hello, hello!
The next step in learning about measuring angles is to operate with them.

Addition of sexagesimal degrees

1. Calculate the following additions:

a) 27º 34' 12" + 12º 32' 59"
b) 82º 43' + 18º 17'
c) 67º 14' 33" + 54º 59' 52"
e) 37º 42' 44" + 110º 37' 33"

Subtraction of sexagesimal degrees

2. Calculate the following subtractions:

a) 27º 14' 12" - 12º 32' 59"
b) 82º 13' - 18º 17'
c) 67º 14' 33" - 54º 59' 52"
e) 37º 22' 14"  110º 37' 33"

I hope you found these useful!
Bye, bye, butterflies!