Individual: Know_equivalence_between_proportion_and_equality_of_product_of_means_and_product_of_extremes
http://www.inter2geo.eu/2008/ontology/GeoSkills#Know_equivalence_between_proportion_and_equality_of_product_of_means_and_product_of_extremes
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Know_equivalence_between_proportion_and_equality_of_product_of_means_and_product_of_extremes defaultCommonName "connaître l'équivalence entre a/b = c/d et ad = bc" (fr)
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Know_equivalence_between_proportion_and_equality_of_product_of_means_and_product_of_extremes belongsToCurriculum Programme_de_Maths_4eme
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Know_equivalence_between_proportion_and_equality_of_product_of_means_and_product_of_extremes hasTopic Proportional_r