{"id":3059,"date":"2015-06-08T11:34:21","date_gmt":"2015-06-08T15:34:21","guid":{"rendered":"\/pole-maths\/?p=3059"},"modified":"2015-06-08T11:34:21","modified_gmt":"2015-06-08T15:34:21","slug":"le-vtt","status":"publish","type":"post","link":"https:\/\/site.ac-martinique.fr\/pole-maths\/?p=3059","title":{"rendered":"Le VTT"},"content":{"rendered":"<p style=\"text-align: justify;\"><a href=\"\/pole-maths\/wp-content\/uploads\/sites\/26\/2015\/06\/Le-VTT.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3062 size-full\" src=\"\/pole-maths\/wp-content\/uploads\/sites\/26\/2015\/06\/Le-VTT.png\" alt=\"Le VTT\" width=\"225\" height=\"151\" srcset=\"https:\/\/site.ac-martinique.fr\/pole-maths\/wp-content\/uploads\/sites\/26\/2015\/06\/Le-VTT.png 225w, https:\/\/site.ac-martinique.fr\/pole-maths\/wp-content\/uploads\/sites\/26\/2015\/06\/Le-VTT-150x101.png 150w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/a>Ce d\u00e9fi a \u00e9t\u00e9 pr\u00e9sent\u00e9 lors de la quatri\u00e8me \u00e9dition de la\u00a0<strong>Semaine des math\u00e9matiques<\/strong>\u00a0qui avait pour th\u00e8me \u00ab\u00a0<strong>Les math\u00e9matiques nous transportent<\/strong>\u00a0\u00bb. Le faire relever par les \u00e9l\u00e8ves est l\u2019occasion de leur offrir une situation leur permettant de mettre en place une d\u00e9marche fond\u00e9e sur l\u2019initiative. Ils pourront ainsi montrer leur capacit\u00e9 \u00e0 utiliser, dans des situations in\u00e9dites, des connaissances acquises qui ne sont pas appel\u00e9es explicitement.<\/p>\n<p style=\"text-align: justify;\">Les objectifs de ce d\u00e9fi sont de comprendre le <strong>fonctionnement d\u2019un p\u00e9dalier<\/strong> et de conna\u00eetre et utiliser <strong>le rapport\u00a0 pignon, p\u00e9dalier et tour de roue.<\/strong><!--more--><\/p>\n<p style=\"text-align: justify;\"><em>\u00ab\u00a0Pour faire avancer un VTT, il faut p\u00e9daler. A ce moment l\u00e0, les dents du pignon et du p\u00e9dalier rentrent dans les maillons de la cha\u00eene. A chaque fois que le p\u00e9dalier tourne d\u2019une dent, la cha\u00eene se d\u00e9place d\u2019un maillon et fait tourner le pignon d\u2019une dent.\u00a0<\/em><em>Le pignon du VTT de Jeanne comporte 10 dents et le p\u00e9dalier 40 dents.\u00a0<\/em><em>Pour effectuer le parcours 1, Jeanne fait effectuer 500 tours complets au p\u00e9dalier\u00a0; pour le parcours 2 il faut 1400 tours complets.\u00a0<\/em><em>Indique pour chaque parcours, combien de tours fera le\u00a0 pignon.\u00a0\u00bb<\/em><\/p>\n<p style=\"text-align: justify;\"><a href=\"\/pole-maths\/wp-content\/uploads\/sites\/26\/2015\/06\/Le-VTT.pdf\" target=\"_blank\">T\u00e9l\u00e9charger le d\u00e9fi pour le CM1.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce d\u00e9fi a \u00e9t\u00e9 pr\u00e9sent\u00e9 lors de la quatri\u00e8me \u00e9dition de la\u00a0Semaine des math\u00e9matiques\u00a0qui avait pour th\u00e8me \u00ab\u00a0Les math\u00e9matiques nous transportent\u00a0\u00bb. Le faire relever par les \u00e9l\u00e8ves est l\u2019occasion de leur offrir une situation leur permettant de mettre en place&#8230; <a class=\"more-link\" href=\"https:\/\/site.ac-martinique.fr\/pole-maths\/?p=3059\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":83,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,111,62],"tags":[65,163,78,59],"class_list":["post-3059","post","type-post","status-publish","format-standard","hentry","category-cycle3","category-resolution-de-problemes-2","category-semaine-des-mathematiques-operations-de-valorisation","tag-cycle-3","tag-defi","tag-resolution-de-problemes","tag-semaine-des-mathematiques"],"_links":{"self":[{"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/posts\/3059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/users\/83"}],"replies":[{"embeddable":true,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3059"}],"version-history":[{"count":3,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/posts\/3059\/revisions"}],"predecessor-version":[{"id":3064,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=\/wp\/v2\/posts\/3059\/revisions\/3064"}],"wp:attachment":[{"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.ac-martinique.fr\/pole-maths\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}