Un baril de pétrole contient 159L. Sur un site de forage, on a produit 360 000L de pétrole.
Combien de barils pleins va-t-on pouvoir expédier ?
Combien de litres manque-t-il pour expédier un baril supplémentaire ?
Lors de ce rituel, les élèves doivent tenter de résoudre un problème donné.
La démarche de résolution et la compréhension du problème donné compte plus que le résultat.
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