{"id":1774,"date":"2017-11-09T10:57:00","date_gmt":"2017-11-09T09:57:00","guid":{"rendered":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/?p=1774"},"modified":"2022-01-03T11:26:18","modified_gmt":"2022-01-03T10:26:18","slug":"la-variable-en-informatique","status":"publish","type":"post","link":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/2017\/11\/09\/la-variable-en-informatique\/","title":{"rendered":"La variable en informatique"},"content":{"rendered":"\n<p><strong>Si le sens de l\u2019adjectif \u00ab variable \u00bb nous est parfaitement familier, il n\u2019en va pas de m\u00eame du nom commun f\u00e9minin \u00ab variable \u00bb utilis\u00e9 en informatique. Un document traite de ce nouveau sujet dans le cadre de la formation au num\u00e9rique des \u00e9l\u00e8ves.<\/strong><\/p>\n\n\n\n<p>Pour explorer la notion de variable, Sylvain Faure, professeur de math\u00e9matiques au coll\u00e8ge de Ceyrat&nbsp; rappelle dans cette pr\u00e9sentation document\u00e9e, que la distinction entre variables et constantes, d\u00e9j\u00e0 \u00e9tablie en 1765 par Jean le Rond d\u2019Alembert, passe aussi par la ma\u00eetrise d\u2019un langage avec une syntaxe tr\u00e8s pr\u00e9cise.<\/p>\n\n\n\n<p>Dans un exemple d\u2019utilisation avec Scratch*, on comprend plus particuli\u00e8rement les trois caract\u00e9ristiques&nbsp; d\u2019une variable informatique (identificateur, type, valeur), v\u00e9ritable \u00ab\u00a0bo\u00eete avec \u00e9tiquette contenant la donn\u00e9e\u00a0\u00bb.<\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#e1f1f1\"><sub><sup>\u2592<\/sup><\/sub> <strong><a href=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2022\/01\/La_notion_de_variable.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">La notion de variable<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-pdfemb-pdf-embedder-viewer\"><\/p>\n\n\n\n<p>* Scratch est un logiciel libre con\u00e7u pour initier les \u00e9l\u00e8ves d\u00e8s l\u2019\u00e2ge de 8 ans \u00e0 des concepts fondamentaux en math\u00e9matiques et en informatique. Il repose sur une approche ludique de l\u2019algorithmique, pour les aider \u00e0 cr\u00e9er, \u00e0 raisonner et \u00e0 coop\u00e9rer.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Le logiciel Scratch<a href=\"https:\/\/scratch.mit.edu\/\"><br>https:\/\/scratch.mit.edu\/<\/a><\/li><li>Jean le Rond d\u2019Alembert sur le site Bibm@th.net<a href=\"http:\/\/www.bibmath.net\/bios\/index.php?action=affiche&amp;quoi=alembert\"><br>http:\/\/www.bibmath.net\/bios\/index.php?action=affiche&amp;quoi=alembert<\/a><\/li><\/ul>\n\n\n\n<p><strong><strong>Plus d\u2019informations<\/strong><br><a href=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/category\/formations-au-numerique\/formation-au-numerique-des-eleves\/\">Retrouvez tous les documents de la formation au num\u00e9rique des \u00e9l\u00e8ves<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si le sens de l\u2019adjectif \u00ab variable \u00bb nous est parfaitement familier, il n\u2019en va pas de m\u00eame du nom commun f\u00e9minin \u00ab variable \u00bb utilis\u00e9 en informatique. Un document [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1776,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"footnotes":""},"categories":[32],"tags":[],"class_list":{"0":"post-1774","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-formation-au-numerique-des-eleves","8":"czr-hentry"},"_links":{"self":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/1774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/comments?post=1774"}],"version-history":[{"count":2,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/1774\/revisions"}],"predecessor-version":[{"id":1788,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/1774\/revisions\/1788"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/media\/1776"}],"wp:attachment":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/media?parent=1774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/categories?post=1774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/tags?post=1774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}