{"id":4285,"date":"2019-01-28T16:18:09","date_gmt":"2019-01-28T15:18:09","guid":{"rendered":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/?p=4285"},"modified":"2023-05-23T15:45:37","modified_gmt":"2023-05-23T14:45:37","slug":"les-ratios-au-college","status":"publish","type":"post","link":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/les-ratios-au-college\/","title":{"rendered":"Les ratios au coll\u00e8ge"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4295 alignright\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Visuel-ratio-300x124.png\" alt=\"\" width=\"300\" height=\"124\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Visuel-ratio-300x124.png 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Visuel-ratio.png 390w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>La notion de ratio est apparue dans le programme du Cycle 4 du 26 juillet 2018, dans le th\u00e8me B &#8220;organisation et gestion de donn\u00e9es, fonctions&#8221;, en lien avec la proportionnalit\u00e9.<\/p>\n<p>Le ratio est plus connu dans les pays anglo-saxons, mais il est aussi utilis\u00e9 dans certaines sections \u00e9conomiques du lyc\u00e9e g\u00e9n\u00e9ral et technologique. C&#8217;est une notion\u00a0 tr\u00e8s proche de celles des fractions et proportions, elle permet de parler des rapports de proportions de diff\u00e9rentes parties d&#8217;un ensemble sans se ramener \u00e0 la quantit\u00e9 totale.<\/p>\n<p>En anglais, le ratio 3:1 se lit &#8220;ratio three to one&#8221; et l&#8217;on pourra dire en fran\u00e7ais que deux quantit\u00e9s se trouvent &#8220;dans le ratio 3 pour 1&#8221;.<\/p>\n<p>Pour aider les professeurs \u00e0 mieux appr\u00e9hender et enseigner cette notion, nous proposons :<\/p>\n<ul>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios_programme_exemple-trace-e\u0301crite.pdf\"><strong>Exemple de trace e\u0301crite<\/strong><\/a> rappelant les termes du programme et illustr\u00e9e d&#8217;exemples<\/li>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios_questions-flash.pdf\"><strong>11 exercices de type questions-flash<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios_ta\u0302ches-interme\u0301diaires.pdf\"><strong>8 exercices de type ta\u0302ches interme\u0301diaires<\/strong><\/a> (probl\u00e8mes guid\u00e9s) avec des <a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios-e\u0301le\u0301ments-de-correction_ta\u0302ches-interme\u0301diaires.pdf\">indications de correction<\/a> pour l&#8217;enseignant<\/li>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios_TAPI.pdf\"><strong>3 exercices \u00e0 prise d&#8217;initiative<\/strong><\/a> avec des <a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios-e\u0301le\u0301ments-de-correction_TAPI.pdf\">indications de correction <\/a> pour l&#8217;enseignant<\/li>\n<li>un document complet <a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2019\/01\/Ratios_au-cycle-4.pdf\">Ratios_au cycle 4<\/a>\u00a0, rassemblant tout ce qui pr\u00e9c\u00e8de pour un t\u00e9l\u00e9chargement unique.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>La notion de ratio est apparue dans le programme du Cycle 4 du 26 juillet 2018, dans le th\u00e8me B &#8220;organisation et gestion de donn\u00e9es, fonctions&#8221;, en lien avec la proportionnalit\u00e9. Le ratio est plus connu dans les pays anglo-saxons, mais il est aussi utilis\u00e9 dans certaines sections \u00e9conomiques du lyc\u00e9e g\u00e9n\u00e9ral et technologique. C&#8217;est &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/les-ratios-au-college\/\">Lire la suite<\/a><\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[173,10,184],"tags":[],"class_list":["post-4285","post","type-post","status-publish","format-standard","hentry","category-cycle-3","category-cycle4","category-ressources","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/4285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/comments?post=4285"}],"version-history":[{"count":11,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/4285\/revisions"}],"predecessor-version":[{"id":4334,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/4285\/revisions\/4334"}],"wp:attachment":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/media?parent=4285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/categories?post=4285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/tags?post=4285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}