{"id":4949,"date":"2026-10-05T11:14:57","date_gmt":"2026-10-05T09:14:57","guid":{"rendered":"https:\/\/lfh.edu.gr\/?p=4949"},"modified":"2026-10-05T11:14:57","modified_gmt":"2026-10-05T09:14:57","slug":"semaine-du-developpement-durable-18-septembre-au-8-octobre-2025-au-lfhed-les-cm1-mene-lenquete-avec-un-projet-savanturiers","status":"publish","type":"post","link":"https:\/\/lfh.edu.gr\/el\/blog\/semaine-du-developpement-durable-18-septembre-au-8-octobre-2025-au-lfhed-les-cm1-mene-lenquete-avec-un-projet-savanturiers\/","title":{"rendered":"Semaine du d\u00e9veloppement durable (18 septembre au 8 octobre 2025) au LFHED\u00a0: les cm1 m\u00e8ne l\u2019enqu\u00eate\u00a0avec un projet Savanturiers\u00a0!"},"content":{"rendered":"<p>Pour d\u00e9couvrir la m\u00e9thodologie des chercheurs, les \u00e9l\u00e8ves de cm1 ont particip\u00e9 \u00e0 un projet Savanturiers \u2013 \u00c9cole de la Recherche, un programme de l\u2019AFPER, Association fran\u00e7aise pour l\u2019\u00e9ducation par la recherche (<a href=\"https:\/\/savanturiers.afper.org\/\">https:\/\/savanturiers.afper.org\/<\/a>). Ils ont men\u00e9 une enqu\u00eate scientifique et ont d\u00e9couvert quels \u00e9taient les plastiques pr\u00e9sents dans les cours de r\u00e9cr\u00e9ation.<\/p>\n<p>Voil\u00e0 leur r\u00e9cit\u00a0:<\/p>\n<p><strong>La vid\u00e9o\u00a0:<\/strong> Deux chercheurs du CNRS de l\u2019universit\u00e9 de Montpellier nous ont lanc\u00e9 un d\u00e9fi. On devait travailler comme de vrais scientifiques et d\u00e9couvrir les plastiques qui polluent notre \u00e9cole. Les scientifiques nous ont expliqu\u00e9 qu\u2019il existait plusieurs plastiques et que pour les reconna\u00eetre il fallait faire des exp\u00e9riences.<\/p>\n<p><strong>\u00c9tape 1\u00a0: <\/strong>On a ramass\u00e9 tout ce qui ressemblait \u00e0 du plastique dans la cour, le jardin du primaire et sur la terrasse des plus grands (c\u2019est l\u00e0 qu\u2019on a trouv\u00e9 les plastiques de grande taille).<\/p>\n<p><strong>\u00c9tape 2\u00a0: <\/strong>On a fait l\u2019\u00e9tat de l\u2019art, \u00e7a veut dire qu\u2019on a utilis\u00e9 les connaissances des scientifiques. Ils nous ont donn\u00e9 des documents qui nous expliquaient qu\u2019ils existaient 6 sortes de plastiques\u00a0: 3 sortes de poly\u00e9thyl\u00e8ne, le polystyr\u00e8ne, le PVC et le polypropyl\u00e8ne.<\/p>\n<p><strong>\u00a0<\/strong><strong>\u00c9tape 3\u00a0: <\/strong>On a utilis\u00e9 une cl\u00e9 de d\u00e9termination, c\u2019est un outil scientifique qui permet de reconna\u00eetre les plastiques en faisant des exp\u00e9riences, car chaque plastique a des r\u00e9actions diff\u00e9rentes quand on le plonge dans l\u2019eau simple, l\u2019eau sal\u00e9e, l\u2019eau chaude, etc \u2026<\/p>\n<p><strong>\u00c9tape 4\u00a0: <\/strong>On a pr\u00e9par\u00e9 une grille d\u2019observation pour garder en m\u00e9moire le r\u00e9sultat des exp\u00e9riences.<\/p>\n<p><strong>\u00c9tape 5\u00a0: <\/strong>On a \u00e9tudi\u00e9 16 \u00e9chantillons de plastique et fait au moins 40 exp\u00e9riences\u00a0! \u00c0 chaque fois on devait suivre des conseils tr\u00e8s pr\u00e9cis (un protocole).<\/p>\n<p><strong>\u00c9tape 6\u00a0: la conclusion\u00a0: <\/strong>En regardant les r\u00e9sultats des exp\u00e9riences, on a d\u00e9couvert qu\u2019il y avait <strong>trois sortes de plastique<\/strong>\u00a0:<\/p>\n<p>Sur 16 \u00e9chantillons\u00a0:<\/p>\n<ul>\n<li>8 \u00e9taient du poly\u00e9thyl\u00e8ne (PE)<\/li>\n<li>7 \u00e9taient du polychlorure de vinyle (PVC)<\/li>\n<li>et 1 \u00e9tait du polystyr\u00e8ne (PS)<\/li>\n<\/ul>\n<p>C\u2019est important de savoir quels plastiques sont autour de nous, car le tri de nos d\u00e9chets d\u00e9pend de nos connaissances et plus on sait, plus on r\u00e9fl\u00e9chit \u00e0 ce qu\u2019on ach\u00e8te et mieux on trie\u00a0! L\u2019enqu\u00eate continue car maintenant on r\u00e9fl\u00e9chit \u00e0 comment partager nos id\u00e9es pour y rem\u00e9dier\u2026<\/p>\n<p><em>Les \u00e9l\u00e8ves de cm1\u00a0!<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Pour d\u00e9couvrir la m\u00e9thodologie des chercheurs, les \u00e9l\u00e8ves de cm1 ont particip\u00e9 \u00e0 un projet Savanturiers \u2013 \u00c9cole de la Recherche, un programme de l\u2019AFPER, Association fran\u00e7aise pour l\u2019\u00e9ducation par la recherche (https:\/\/savanturiers.afper.org\/). Ils ont men\u00e9 une enqu\u00eate scientifique et ont d\u00e9couvert quels \u00e9taient les plastiques pr\u00e9sents dans les cours de r\u00e9cr\u00e9ation. Voil\u00e0 leur r\u00e9cit\u00a0: [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":4954,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-4949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-primaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Semaine du d\u00e9veloppement durable (18 septembre au 8 octobre 2025) au LFHED\u00a0: les cm1 m\u00e8ne l\u2019enqu\u00eate\u00a0avec un projet Savanturiers\u00a0! - 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