Proportional reasoning taught in maths lessons in schools has proved to be useful in daily life. This type of reasoning allows us to adapt the quantity of ingredients in a recipe or to calculate the distance travelled as a function of spped by relying on ratios and proportions.  is also very useful in our daily lives. It allows us to calculate the price of certain products when we shop, to adapt the quantity of ingredients in a recipe, to convert foreign currencies. It is at play when we unders...

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