{"id":7840,"date":"2026-07-13T10:38:59","date_gmt":"2026-07-13T08:38:59","guid":{"rendered":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/?p=7840"},"modified":"2026-09-03T10:25:33","modified_gmt":"2026-09-03T08:25:33","slug":"parcours-elea-soldat-de-plomb","status":"publish","type":"post","link":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/2026\/07\/13\/parcours-elea-soldat-de-plomb\/","title":{"rendered":"Parcours \u00c9l\u00e9a : Soldat de plomb ?"},"content":{"rendered":"\n<p>L\u2019activit\u00e9 propos\u00e9e vise \u00e0 d\u00e9terminer si un soldat dit \u00ab de plomb \u00bb est effectivement constitu\u00e9 de cet \u00e9l\u00e9ment chimique en s\u2019appuyant sur la d\u00e9termination exp\u00e9rimentale de sa masse volumique.<\/p>\n\n\n\n<p>Dans une premi\u00e8re phase, les \u00e9l\u00e8ves d\u00e9terminent la masse volumique de plusieurs cylindres m\u00e9talliques (aluminium, zinc, fer, cuivre et plomb) \u00e0 partir de mesures de masse et de dimensions. Cette \u00e9tape leur permet de mobiliser les comp\u00e9tences exp\u00e9rimentales associ\u00e9es \u00e0 la mesure de grandeurs physiques, au traitement des donn\u00e9es et \u00e0 l\u2019exploitation de la relation reliant la masse, le volume et la masse volumique.<\/p>\n\n\n\n<p>Dans un second temps, les \u00e9l\u00e8ves r\u00e9investissent la d\u00e9marche pour d\u00e9terminer la masse volumique du mat\u00e9riau constituant un soldat m\u00e9tallique. Ils confrontent ensuite la valeur obtenue aux valeurs de r\u00e9f\u00e9rence afin de conclure, de mani\u00e8re argument\u00e9e, sur la nature du mat\u00e9riau utilis\u00e9.<\/p>\n\n\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2023\/07\/niveau.png\" alt=\"\" width=\"22\" height=\"20\" \/> <span style=\"color: #333399\"><strong><span style=\"color: #0d4798\">\u00a0 Cycle 4 (4e &#8211; 3e \u00e0 privil\u00e9gier)\u00a0 <\/span>\u00a0<\/strong><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2023\/09\/competence.png\" alt=\"\" width=\"22\" height=\"20\" \/> <span style=\"color: #0d4798\">Rep\u00e8re programme :\u00a0<br \/>\u00a0 \u00a0 \u00a0 <strong>Domaine 5 du CRCN\u00a0<\/strong>\/ 5.2 Environnement num\u00e9rique &#8211; \u00c9voluer dans un environnement num\u00e9rique<\/span><\/p>\n<ul>\n<li><span style=\"color: #0d4798\">Proposer et mettre en \u0153uvre un protocole exp\u00e9rimental pour d\u00e9terminer une masse volumique d\u2019un solide.<\/span><\/li>\n<li><span style=\"color: #0d4798\">Exploiter des mesures de masse volumique pour diff\u00e9rencier des esp\u00e8ces chimiques.<br \/>Masse volumique : relation <em>\u03c1<\/em> = <em>m<\/em><sub>\u00e9chantillon<\/sub>\/<em>V<\/em><sub>\u00e9chantillon<\/sub> , influence de la temp\u00e9rature.<\/span><\/li>\n<\/ul>\n\n\n<h4 class=\"wp-block-heading\">Objectifs<\/h4>\n\n\n\n<ul style=\"background-color:#f6ffed\" class=\"wp-block-list has-background\">\n<li>D\u00e9terminer la masse volumique d\u2019un solide \u00e0 partir de mesures de masse et de volume.<\/li>\n\n\n\n<li>Exploiter des mesures de masse volumique<\/li>\n\n\n\n<li>Mobiliser la relation<em> \u03c1<\/em> = <em>m<\/em><sub>\u00e9chantillon<\/sub>\/<em>V<\/em><sub>\u00e9chantillon<\/sub> et les unit\u00e9s associ\u00e9es.<\/li>\n\n\n\n<li>Mettre en \u0153uvre une d\u00e9marche scientifique.<\/li>\n\n\n\n<li>D\u00e9velopper l\u2019autonomie des \u00e9l\u00e8ves dans un environnement num\u00e9rique via un parcours \u00c9l\u00e9a.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Parcours \u00c9l\u00e9a<\/h4>\n\n\n\n<p class=\"has-background\" style=\"background-color:#f1f4f5\">Comment tester facilement ce parcours ELEA ? Les enseignants acc\u00e8dent \u00e0 l&rsquo;espace \u00c9LEA de leur \u00e9tablissement via le sommaire de l&rsquo;ENT, puis retrouvent ce parcours dans le <strong>R\u00e9seau des concepteurs \u00c9LEA <\/strong>avec les mots-cl\u00e9s \u00ab Ac Clermont \u00bb et \u00ab Physique \u00bb. Pour int\u00e9grer le parcours dans leur espace \u00c9LEA, il suffit de le dupliquer.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Fiche ressource pour le professeur<\/h4>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2026\/07\/FicheRessource_Soldat_De_Plomb_Masse_Volumique_cycle4.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu\u00e9 FicheRessource_Soldat_De_Plomb_Masse_Volumique_cycle4.\"><\/object><a id=\"wp-block-file--media-85250502-c8a6-46a0-8c0e-97b484fa1c4d\" href=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2026\/07\/FicheRessource_Soldat_De_Plomb_Masse_Volumique_cycle4.pdf\">FicheRessource_Soldat_De_Plomb_Masse_Volumique_cycle4<\/a><a href=\"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-content\/uploads\/sites\/6\/2026\/07\/FicheRessource_Soldat_De_Plomb_Masse_Volumique_cycle4.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-85250502-c8a6-46a0-8c0e-97b484fa1c4d\">T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n<p class=\"has-background\" style=\"background-color:#f1f9f9\">Les ressources cr\u00e9\u00e9es en 2025-2026 par les membres du p\u00f4le de comp\u00e9tences \u00ab\u00a0Physique-Chimie\u00a0\u00bb ont pour objectif d\u2019<strong>accompagner les \u00e9l\u00e8ves dans leurs apprentissages<\/strong>&nbsp;gr\u00e2ce \u00e0 des activit\u00e9s H5P et \u00c9l\u00e9a. <br>Responsable\/contact : Christine Bideux (<a href=\"mailto:christine.bideux@ac-clermont.fr\">christine.bideux@ac-clermont.fr)<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019activit\u00e9 propos\u00e9e vise \u00e0 d\u00e9terminer si un soldat dit \u00ab de plomb \u00bb est effectivement constitu\u00e9 de cet \u00e9l\u00e9ment chimique en s\u2019appuyant sur la d\u00e9termination exp\u00e9rimentale de sa masse volumique.<\/p>\n","protected":false},"author":59,"featured_media":7844,"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":[50,59],"tags":[93,77],"class_list":{"0":"post-7840","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physique-chimie","8":"category-ressources-poles","9":"tag-2025-2026","10":"tag-activite-elea","11":"czr-hentry"},"_links":{"self":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/7840","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\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/comments?post=7840"}],"version-history":[{"count":2,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/7840\/revisions"}],"predecessor-version":[{"id":7870,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/posts\/7840\/revisions\/7870"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/media\/7844"}],"wp:attachment":[{"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/media?parent=7840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/categories?post=7840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pedagogie.ac-clermont.fr\/numerique-educatif\/wp-json\/wp\/v2\/tags?post=7840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}