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T. 8 Proporcionalidad y porcentajes.

1º ESO

Rubén Salvador

on 19 February 2014

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Transcript of T. 8 Proporcionalidad y porcentajes.

Un automóvil gasta 5 l de gasolina cada 100 km, si quedan en el depósito 12 litros, ¿Cuántos km podrá recorrer?
Un porcentaje tiene una fracción
y un nº decimal equivalentes:
35 % = 35/100 = 0,35
feels fast and easy to create
reassuring and inspiring VS intimidating
In prezi you write in space
write a walk
A doble, triple...de la 1ª le corresponde
doble, triple....de la 2ª.
Sus cocientes son iguales:
a/a' = b/b' = c/c' = ...k = razón de proporcionalidad.
Creating a cinematic atmosphere
can make for a memorable experience
Incrementos y disminuciones
Para calcular porcentajes usamos reglas de 3 directas,
la fracción equivalente o el nº decimal equivalente.
En un curso hay 29 estudiantes de los que el 53 % son alumnas. ¿Cuántas chicas hay?
53% de 29 = 53% · 29 = 53/100 · 29 = 0,53 · 29 = 15 alumnas
29 alumnos----------- 100 %
x alumnas------------ 53%
29/100 = x/53
29 · 53 = 100 · x
x= 1537/100
x= 15,37
T. 8 Proporcionalidad y porcentajes
Colegio Divina Pastora de Toledo
Magnitudes directamente proporcionales:
Regla de 3 simple directa
1. Razón y proporción numérica:
La razón entre 2 números a y b es el cociente a/b.
Los números a, b, c y d forman una proporción si a/b = c/d
El producto de extremos (a y d) es igual al producto de medios (b y c).
Es la cantidad que hay en cada 100 unidades. (%)
In general, to create an experience that feels positive your prezi should be
Compramos un coche de 9.200 € de precio de fábrica pero hay q
e añadir un 21 % de IVA. ¿Cuánto pagaremos?
100% + 21% = 121 % = 1,21
1,21 · 9.200 = 11.132 €
Compramos unos pantalones de 35 € en las rebajas
de enero y nos descuentan un 25%. ¿Cuánto pagaremos?
100% - 25% = 75% = 0,75
0,75 · 35 = 26,25 €
"The method of loci is also commonly referred to as the journey method. In basic terms, it is a method of memory enhancement which uses visualization to organize and recall information. Many memory contest champions claim to use this technique in order to recall faces, digits, and lists of words. These champions’ successes have little to do with brain structure or intelligence, but more to do with their technique of using regions of their brain that have to do with spatial learning."
Spatial organisations can help people remember:
The eyes focus mostly on the title, then the first bullet point. From there the focus diminishes as the viewer reads their way through the bullet point list.
Prezi brings the content to the center by zooming, it also removes other content on our canvas from view. As a result the viewer’s eyes are drawn to the center of the screen at each viewpoint, and are focused on one section of content at a time.
The following tests were conducted using heat spots to indicate where the users' eyes focused when viewing a screen. The red color indicates more focus and time spent viewing a particular area; green areas show less focus.
But why create scenes?
Does my data really need sceneography?
If you like to focus on details, yes.
Lando Calrissian
Darth Vadar
Han Solo
The Intergalactic Empire
Imperial ground forces
Emperor Palpatine
Calamari Cruiser
Blow up Death Star (again)
Save Galaxy (again)
The Rebel Alliance
Admiral Ackbar
Characters :
Millenium Falcon
Luke Skywalker
Tie Fighters
AT-ST Walkers
Super Star Destroyer
Death Star
The overview structure implies the tension
between the two sides
- it can be conveyed even at a distance where we can't see the details
Porcentajes o tanto por ciento
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