We had quite had quite a good time today playing with paper slide rulers!
Here is the link to the printout:
There's a lot of website discussing slide rulers of course... here is a nice one in which I learnt that Astronauts brought some onto the moon in 1969!
And if you want a "real" one, just have a look on ebay, people sell them cheap!
Nous avons passé un bon moment aujourd'hui à jouer avec des règles à calculer en papier!
Voici le lien vers la version imprimable:
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