Lorsque vous lancez un objet, sa trajectoire est une parabole. Comment
est-ce que sa vitesse instantanée et ses composantes verticale et horizontale
varient-elles au cours de la trajectoire ? Que se passe-t-il lorsque la vitesse
initiale est plus grande ? Plus petite ? Que se passerait-il si la gravité
était plus importante ? Plus faible ? Nulle ? Négative ? Avec une gravité et
une vitesse initiale constantes, comment lancer l'objet pour lui faire
atteindre le point le plus loin à l'horizon ? Dans cet article nous présentons
un modèle pour explorer ces questions.
It goes against the grain of modern education to teach children to program. What fun is there in making plans, acquiring discipline in organizing thoughts, devoting attention to detail and learning to be self-critical?
--Alan Perlis
vendredi 25 mars 2016
samedi 12 mars 2016
Tiny, yet so beautiful
How do you introduce an unknown, alternative programming language to other developers ? One way to do so is by showing lots of small examples. That is what we did in Elegant Pharo Code — Beautiful & Powerful One-liners, Expressions and Snippets.
Sven Van Caekenberghe wrote a very nice article exposing the strong features
of Pharo. How this programming language and environment let you solve problem
very elegantly. Pharo is the environment used for Dr. Geo
Read Sven's article
Read Sven's article
jeudi 10 mars 2016
Fibonacci spiral
The Fibonacci spiral is based on the Fibonacci sequence to construct a curve
forming a spiral. This spiral and some variants appear in the constructions of
live entities. In this article we present a computed, interactive version of
this spiral with the help of Dr. Geo, an interactive geometry and programming
application. Later we discuss on the interest of this approach in mathematics
secondary teaching.
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