{"id":30261,"date":"2025-12-11T14:31:01","date_gmt":"2025-12-11T19:31:01","guid":{"rendered":"https:\/\/lfih.org\/?p=30261"},"modified":"2025-12-11T14:40:32","modified_gmt":"2025-12-11T19:40:32","slug":"les-defis-scientifiques-quand-les-cm1-cm2-deviennent-professeurs-des-maternelles","status":"publish","type":"post","link":"https:\/\/lfih.org\/index.php\/les-defis-scientifiques-quand-les-cm1-cm2-deviennent-professeurs-des-maternelles\/","title":{"rendered":"Les d\u00e9fis scientifiques avec les CM1-CM2"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"30261\" class=\"elementor elementor-30261\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-98760db elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"98760db\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-80ee094\" data-id=\"80ee094\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1255352 animated-slow elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1255352\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Quand les CM1-CM2 deviennent professeurs des maternelles<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5a77f2e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5a77f2e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-0240250\" data-id=\"0240250\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-34098e9 elementor-widget elementor-widget-image\" data-id=\"34098e9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"\u00e7a flotte !\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte--150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-9744f55\" data-id=\"9744f55\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9c0c665 elementor-widget elementor-widget-image\" data-id=\"9c0c665\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"le tourbillon\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-tourbillon-150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-1b7b05a\" data-id=\"1b7b05a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8daf508 elementor-widget elementor-widget-image\" data-id=\"8daf508\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pr\u00e9sentation des d\u00e9fis\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/presentation-des-defis-150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3a2036a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3a2036a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1b48079\" data-id=\"1b48079\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35d6eb5 elementor-widget elementor-widget-text-editor\" data-id=\"35d6eb5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\"><p>Ce mercredi, la cour de r\u00e9cr\u00e9ation s\u2019est transform\u00e9e en v\u00e9ritable laboratoire d\u2019exp\u00e9riences. Les \u00e9l\u00e8ves de CM1-CM2 avaient pr\u00e9par\u00e9 pour leurs camarades de maternelle une s\u00e9rie de d\u00e9fis scientifiques \u00e0 relever. Notre id\u00e9e\u00a0:\u00a0 \u00e9veiller la curiosit\u00e9, stimuler l\u2019esprit d\u2019\u00e9quipe et montrer que la science peut \u00eatre\u2026 magique !<\/p><p>Chaque groupe de maternelle devait passer dans tous les ateliers et tenter de r\u00e9soudre une \u00e9nigme:<\/p><ul><li>Le sous-marin : comment faire remonter \u00e0 la surface une bouteille immerg\u00e9e ?<\/li><li>Le tourbillon : comment r\u00e9ussir \u00e0 faire remonter \u00e0 la surface une petite tomate et un \u00e9crou ?<\/li><li>\u00c7a flotte ! : comment transformer de la p\u00e2te \u00e0 modeler pour qu\u2019elle flotte sur l\u2019eau ?<\/li><li>Le siphon : comment transvaser l\u2019eau d\u2019un bac rempli vers un bac vide sans la toucher ?<\/li><li>Le tour de magie : comment la magicienne parvient-elle \u00e0 faire bouger la boule magique ?<\/li><\/ul><p>Les CM1-CM2 avaient pr\u00e9par\u00e9 les exp\u00e9riences avec soin : mat\u00e9riel pr\u00eat, explications claires, et surtout beaucoup de patience pour accompagner les plus jeunes. Les \u00e9l\u00e8ves de maternelle, intrigu\u00e9s, ont manipul\u00e9, test\u00e9, parfois \u00e9chou\u00e9\u2026 mais toujours recommenc\u00e9 avec enthousiasme.<\/p><p>\u00c0 la fin de la matin\u00e9e, les sourires \u00e9taient partout : les petits fiers d\u2019avoir relev\u00e9 les d\u00e9fis, les grands heureux d\u2019avoir transmis leurs connaissances. Ce projet a montr\u00e9 que la science peut \u00eatre partag\u00e9e, expliqu\u00e9e et v\u00e9cue ensemble, quel que soit l\u2019\u00e2ge.<\/p><p style=\"text-align: center;\">Les scientifiques des classes de maternelles et \u00a0CM1-CM2<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8b5a363 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8b5a363\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-3125359\" data-id=\"3125359\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1f380a0 elementor-widget elementor-widget-image\" data-id=\"1f380a0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"le sous marin\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-sous-marin-150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-82b8864\" data-id=\"82b8864\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dd3e4cc elementor-widget elementor-widget-image\" data-id=\"dd3e4cc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"le siphon\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/le-siphon-150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-1dc580b\" data-id=\"1dc580b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fba9587 elementor-widget elementor-widget-image\" data-id=\"fba9587\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"\u00e7a flotte ! 2\">\n\t\t\t\t\t\t\t<img width=\"1024\" height=\"768\" src=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-1024x768.jpg\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-1024x768.jpg 1024w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-300x225.jpg 300w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-100x75.jpg 100w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-1536x1152.jpg 1536w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2.jpg 1600w, https:\/\/lfih.org\/wp-content\/uploads\/2025\/12\/ca-flotte-2-150x113.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Quand les CM1-CM2 deviennent professeurs des maternelles Ce mercredi, la cour de r\u00e9cr\u00e9ation s\u2019est transform\u00e9e en v\u00e9ritable laboratoire d\u2019exp\u00e9riences. Les&nbsp;<a href=\"https:\/\/lfih.org\/index.php\/les-defis-scientifiques-quand-les-cm1-cm2-deviennent-professeurs-des-maternelles\/\">&hellip;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[61],"tags":[],"_links":{"self":[{"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/posts\/30261"}],"collection":[{"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/comments?post=30261"}],"version-history":[{"count":17,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/posts\/30261\/revisions"}],"predecessor-version":[{"id":30278,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/posts\/30261\/revisions\/30278"}],"wp:attachment":[{"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/media?parent=30261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/categories?post=30261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lfih.org\/index.php\/wp-json\/wp\/v2\/tags?post=30261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}