{"id":2005,"date":"2016-09-24T21:49:31","date_gmt":"2016-09-24T20:49:31","guid":{"rendered":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/?p=2005"},"modified":"2018-02-17T02:05:33","modified_gmt":"2018-02-17T01:05:33","slug":"nombre-a-deviner","status":"publish","type":"post","link":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/nombre-a-deviner\/","title":{"rendered":"Nombre \u00e0 deviner"},"content":{"rendered":"<h2>Objectifs<\/h2>\n<ul>\n<li>Construire un algorithme.A partir d&#8217;un algorithme simple, construire un algorithme de plus en plus \u00e9labor\u00e9 permettant de simuler la recherche d&#8217;un nombre choisi au hasard dans un intervalle donn\u00e9\u00a0; modifier ensuite cet algorithme afin qu&#8217;il donne des indications permettant d&#8217;\u00e9laborer une strat\u00e9gie de jeu.Il s\u2019agit donc de r\u00e9investir les diff\u00e9rentes syntaxes d\u2019algorithmes d\u00e9j\u00e0 \u00e9tudi\u00e9es.<\/li>\n<\/ul>\n<ul>\n<li>Introduire la notion de recherche par dichotomie.L&#8217;utilisation d&#8217;un arbre de probabilit\u00e9s permet de justifier la conjecture obtenue.<\/li>\n<\/ul>\n<h2>Pr\u00e9requis<\/h2>\n<ul>\n<li>Utilisation basique d\u2019Algobox<\/li>\n<li>Instructions conditionnelles, boucle \u00ab\u00a0tant que\u00a0\u00bb<\/li>\n<\/ul>\n<h2>\u00c9nonc\u00e9<\/h2>\n<p>L&#8217;ordinateur choisit un nombre entier au hasard entre 10 et 100, on doit le retrouver. L&#8217;ordinateur dit plus grand, plus petit ou bravo \u00e0 chaque proposition.<\/p>\n<p>Le but de l&#8217;activit\u00e9 est de construire progressivement un algorithme permettant de simuler ce jeu, puis de proposer une strat\u00e9gie permettant de minimiser le nombre d&#8217;essais.<\/p>\n<h2>Organisation pratique<\/h2>\n<p>Travail autonome en salle informatique.<\/p>\n<h2>Fichiers disponibles<\/h2>\n<ul>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2016\/09\/nombre_deviner_eleve.pdf\">Fichier \u00e9l\u00e8ve Nombre \u00e0 deviner<\/a> (pdf)<\/li>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2016\/09\/nombre_deviner.zip\">Fichier Algobox Nombre \u00e0 deviner<\/a><\/li>\n<li><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-content\/uploads\/sites\/3\/2016\/09\/nombre_deviner.pdf\">Fiche professeur Nombre \u00e0 deviner<\/a> ( pdf)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Objectifs Construire un algorithme.A partir d&#8217;un algorithme simple, construire un algorithme de plus en plus \u00e9labor\u00e9 permettant de simuler la recherche d&#8217;un nombre choisi au hasard dans un intervalle donn\u00e9\u00a0; modifier ensuite cet algorithme afin qu&#8217;il donne des indications permettant d&#8217;\u00e9laborer une strat\u00e9gie de jeu.Il s\u2019agit donc de r\u00e9investir les diff\u00e9rentes syntaxes d\u2019algorithmes d\u00e9j\u00e0 \u00e9tudi\u00e9es. &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/nombre-a-deviner\/\">Lire la suite<\/a><\/p>\n","protected":false},"author":351,"featured_media":0,"comment_status":"open","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":[23,22,14],"tags":[],"class_list":["post-2005","post","type-post","status-publish","format-standard","hentry","category-seconde","category-lycee","category-numerique","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/2005","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\/351"}],"replies":[{"embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/comments?post=2005"}],"version-history":[{"count":3,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/2005\/revisions"}],"predecessor-version":[{"id":2011,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/posts\/2005\/revisions\/2011"}],"wp:attachment":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/media?parent=2005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/categories?post=2005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/mathematiques\/wp-json\/wp\/v2\/tags?post=2005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}