# We have plenty of learning resources

Come on in, the door's open. Get critical knowledge in many variations like articles, videos, animations, infographics, humor, ebooks, and the latest trend: slide presentations —samples below.

## Modern Presentations - The new way to make them.

**Click the image to download the slide presentation: Modern Presentations - The new way to make them. **

PowerPoint has been on the market since early in 1990. But presentations are still made following the original style. However, there is a new trend in creating attractive presentations. Presentations that capture the attention and focus on your message.

Learn how to make powerful slide presentations writing less text and increasing the amount of images.

Learn to make slide presentations that are easy to translate to other languages.

Learn how to make slide presentations that reaches the audience quicker.

## Incredible Quotations from History’s Top Thinkers About Prime Numbers.

**Click the image to download the slide presentation: Incredible Quotations from History's Top Thinkers About Prime Numbers. **

This is a humor PDF 41-slide presentation about how some people could reason on the apparently simple field of the prime numbers distribution.

Was **Giordano Bruno** accused of saying: “I don’t care if 1 is prime or not, if 2 is prime or not, if 3 is prime or not. All I care is that there are more stars in the heavens than primes in the earth?”

Is it true that **George Washington** said: “What’s the difference between prime numbers and composite numbers? There are no real differences, remember: *E pluribus unum?*”

Is it true that **Erwin Schrödinger** said: “3 is a prime, 5 is a prime, and 7 is a prime, however, 9 has a dual prime-composite state that can collapse to one side or the other depending on the observer’s cat?”

And don't leave aside the politicians, you know, they're everywhere. Is it true this statement attributed to the former US president **George W. Bush**: “3 is prime, 5 is prime, 7 is prime, and 9 … well, any odd number can be prime as long as it is not 9?”

## The Paradox of the Great Silence.

**Click the image to download the slide presentation: The Paradox of the Great Silence. **

In 2006, the astrophysicist Alexander Zaitsev, stated what is known as the SETI paradox. The SETI paradox is about ....

**“the insistent quest for intelligent signals from other civilizations and the persistent aversion to any attempts to transmit such signals from Earth.” **

In other words, the paradox is about... **you give me all your big data, but I keep silent about mine**.

Of course, in the field of inter-galaxy signaling we are just beginning to turn on the radio. No matter what scientists and technician say, we know almost nothing about space, much less how to handle space encounters.

## A Short History Of The Cartesian Coordinates.

**Click the image to download the slide presentation: A Short History of the Cartesian Coordinates. **

The first intent of formalizing the geometry concepts and knowledge came from Euclid’s **Elements** (c. 300 BC). The **Elements** is probably a collection of theorems previously proved by other mathematicians that predated Euclid with some original work; among them Pythagoras.

However, geometry became analytic with the publication of **René Descartes**' (1596–1650) masterpiece in 1637: **Discourse on the Method**.

But some authors claim that the discovery of the coordinate system should be attributed to **Pierre de Fermat** (1601–1665), because Fermat had more geometrical insight than **Descartes**.