{"id":3808,"date":"2026-03-12T13:07:31","date_gmt":"2026-03-12T12:07:31","guid":{"rendered":"https:\/\/www.collegedelouest.ch\/wordpress\/?p=3808"},"modified":"2026-03-12T21:34:48","modified_gmt":"2026-03-12T20:34:48","slug":"dehors-observer","status":"publish","type":"post","link":"https:\/\/www.collegedelouest.ch\/wordpress\/2026\/03\/12\/dehors-observer\/","title":{"rendered":"Dehors \u00ab Observer \u00bb"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Dehors \u00ab Observer \u00bb<\/h1>\n\n\n\n<ul id=\"block-07c6d08a-9eb4-424e-af69-fc8800e159ec\" class=\"wp-block-list\">\n<li>Date : 10 mars 2026<\/li>\n\n\n\n<li>Lieu : Potager du Lyc\u00e9e Blaise Cendrars<\/li>\n\n\n\n<li>Nombre d&rsquo;\u00e9l\u00e8ves : 18<\/li>\n\n\n\n<li>Niveau : quatri\u00e8me Harmos<\/li>\n\n\n\n<li>Temps : couvert, pluie<\/li>\n\n\n\n<li>Temps de travail : env. une heure<\/li>\n\n\n\n<li>Num\u00e9ro de la s\u00e9ance du document de r\u00e9f\u00e9rence : <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"block-d7b594cf-d619-4535-abb6-fd826da8964f\">Objectifs<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le travail d&rsquo;un scientifique consiste \u00e0 r\u00e9fl\u00e9chir, observer, r\u00e9fl\u00e9chir, observer, d\u00e9crire, ordonner, organiser, chercher, d\u00e9crire, r\u00e9ordonner, structurer, un peu comprendre, restructurer, &#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il s&rsquo;agissait aujourd&rsquo;hui d&rsquo;observer, de r\u00e9fl\u00e9chir, d&rsquo;observer et de d\u00e9crire.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"block-aad91833-8ff9-4738-8228-3339c6eeb761\">Pr\u00e9liminaire<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se trouver dans un jardin l&rsquo;hiver est un pr\u00e9liminaire \u00e0 sa description l&rsquo;\u00e9t\u00e9. Les \u00e9l\u00e8ves devaient donc au pr\u00e9alable observer le jardin. Ce fut un moment d&rsquo;investigations libres qui \u00e9videmment appel\u00e8rent beaucoup de questions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Outre, l&rsquo;absence de fleurs, c&rsquo;est la pr\u00e9sence d&rsquo;autres plantes presque inconnues : \u00ab un buisson tout sec \u00bb et un autre tout vert sombre. L&rsquo;id\u00e9e de go\u00fbter pour d\u00e9terminer leur vient pour le second. Ils demandent l&rsquo;autorisation, go\u00fbtent et &#8230; trouvent : de la sauge. Les feuilles restent l&rsquo;hiver ? Il existe de multiples types de sauges, annuelles ou rustiques. Ainsi tous les arbres ne perdent pas leurs feuilles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour le premier, peut-\u00eatre est-il mort ? Au lieu de go\u00fbter, sentez &#8230; leur dit-on. \u00ab De la lavande \u00bb. L&rsquo;odeur persiste quelque peu. Cela peut-\u00eatre vivant et comme mort &#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Plusieurs demandent o\u00f9 sont les vers-de-terre. On r\u00e9pond, trouvez-en. \u00ab Il n&rsquo;y en a pas ! \u00bb. \u00ab Pourtant, il pleut. \u00bb Pas de vers-de-terre l&rsquo;hiver ? Se sont-ils cach\u00e9s parce qu&rsquo;il fait froid ?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ensemble, on observe et on se questionne. Personne ne se demande pourquoi il n&rsquo;y a pas d&rsquo;insectes, mais les vers de terre &#8230; on observe et r\u00e9fl\u00e9chit, ou &#8230; le contraire.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"block-b4b14bdb-108a-45f5-881b-6a2b50716655\">Travaux pratiques<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour observer et d\u00e9crire, il faut choisir. On demande aux \u00e9l\u00e8ves de trouver deux petits objets de la nature qui sont diff\u00e9rents et qui leur plaisent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La recherche de vers-de-terre est infructueuse. La cueillette de sauge g\u00e9n\u00e9ralement adopt\u00e9e. Comme l&rsquo;herbe verte, pour laquelle il faut pr\u00e9ciser que seuls les ruminants en mangent (ce qui est \u00e9videmment faux, mais bienvenu pour \u00e9viter que le groupe ne se transforme en moutons :-).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-1024x768.jpg\" alt=\"\" class=\"wp-image-3828\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714487390299319095291467.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La pluie se fait alors plus intense. Assez pour que la suite ne soit plus possible qu&rsquo;\u00e0 l&rsquo;abri. \u00c0 proximit\u00e9 du lyc\u00e9e, nous nous r\u00e9fugions dans une de ses salles o\u00f9 vont avoir lieu les \u00e9tapes d&rsquo;observations et de descriptions des deux objets recueillis (des sous-mains de dessin avaient \u00e9t\u00e9 pr\u00e9vus pour rester sur le terrain ; mais la pluie \u00e9tait trop probl\u00e9matique).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La loupe<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;utilisation d&rsquo;une loupe s&rsquo;\u00e9tait d\u00e9j\u00e0 faite pr\u00e9c\u00e9demment une fois o\u00f9 il fallut leur expliquer comment la placer entre un objet et leur \u0153il pour voir de petits d\u00e9tails.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ici, il s&rsquo;agissait d&rsquo;aller un peu plus loin en effectuant deux dessins d&rsquo;observation : l&rsquo;un avec une loupe, l&rsquo;autre sans. Ce travail \u00e9tait \u00e0 r\u00e9aliser dans leur cahier d&rsquo;observations avec un titre impos\u00e9 (voir images) et une l\u00e9gende.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-1024x768.jpg\" alt=\"\" class=\"wp-image-3823\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140712665768788454383267787.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ensemble autour de petites tables, chacun s&rsquo;est mis au travail.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"704\" data-id=\"3833\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-1024x704.jpg\" alt=\"\" class=\"wp-image-3833\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-1024x704.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-300x206.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-768x528.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-1536x1056.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-690x474.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813-980x674.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140711118170131387214970813.jpg 1549w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"718\" height=\"1024\" data-id=\"3826\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-718x1024.jpg\" alt=\"\" class=\"wp-image-3826\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-718x1024.jpg 718w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-210x300.jpg 210w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-768x1095.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-1078x1536.jpg 1078w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-690x984.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391-980x1397.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140714068595086232148612790-e1773315138391.jpg 1347w\" sizes=\"auto, (max-width: 718px) 100vw, 718px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" data-id=\"3825\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-1024x640.jpg\" alt=\"\" class=\"wp-image-3825\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-1024x640.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-300x188.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-768x480.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-1536x960.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-690x431.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573-980x613.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140713056510590365777683970-e1773315217573.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"3821\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-1024x768.jpg\" alt=\"\" class=\"wp-image-3821\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071161310165188869569018.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"909\" height=\"1024\" data-id=\"3820\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-909x1024.jpg\" alt=\"\" class=\"wp-image-3820\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-909x1024.jpg 909w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-266x300.jpg 266w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-768x865.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-1364x1536.jpg 1364w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-690x777.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705-980x1104.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709937071158884738752543-e1773315261705.jpg 1440w\" sizes=\"auto, (max-width: 909px) 100vw, 909px\" \/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">R\u00e9sultats<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une grosse surprise nous attendait pendant le travail d&rsquo;observations et de description : les difficult\u00e9s li\u00e9es \u00e0 l&rsquo;utilisation de la loupe. En effet le choix de r\u00e9aliser deux dessins avec et sans loupe fut guid\u00e9 par la volont\u00e9 de leur faire prendre conscience de la diff\u00e9rence d&rsquo;observations permise par la loupe. Nous nous attendions \u00e0 un dessin de d\u00e9tail et un autre d&rsquo;ensemble.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-1 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"3818\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-1024x768.jpg\" alt=\"\" class=\"wp-image-3818\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140710733691415237684254175-e1773315839257.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"3819\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-1024x768.jpg\" alt=\"\" class=\"wp-image-3819\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709548295336792936842311.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"678\" data-id=\"3817\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-1024x678.jpg\" alt=\"\" class=\"wp-image-3817\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-1024x678.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-300x199.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-768x509.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-690x457.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321-980x649.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-1773314071035776514951796876059-e1773315951321.jpg 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"3816\" src=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-1024x768.jpg\" alt=\"\" class=\"wp-image-3816\" srcset=\"https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-1024x768.jpg 1024w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-300x225.jpg 300w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-768x576.jpg 768w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-1536x1152.jpg 1536w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-690x518.jpg 690w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376-980x735.jpg 980w, https:\/\/www.collegedelouest.ch\/wordpress\/wp-content\/uploads\/2026\/03\/wp-17733140709057417814147264280485-e1773315900376.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La surprise a \u00e9t\u00e9 de constater les difficult\u00e9s \u00e0 repr\u00e9senter les d\u00e9tails de l&rsquo;image vus \u00e0 travers la loupe. Non seulement l&rsquo;image partielle vue \u00e0 travers la loupe devait \u00eatre de la m\u00eame taille que celle vue \u00e0 l&rsquo;\u0153il nu, mais le dessin devait imp\u00e9rativement \u00e0 leurs yeux repr\u00e9senter l&rsquo;ensemble de l&rsquo;objet dont ils disposaient. Repr\u00e9senter un agrandissement devenait donc impossible. Apr\u00e8s avoir vu une image agrandie, qu&rsquo;il nous ont d\u00e9crite, certains ont m\u00eame pos\u00e9s la loupe sur l&rsquo;objet pour le voir entier et le repr\u00e9senter ainsi. C&rsquo;\u00e9tait comme si la loupe \u00e9tait un obstacle \u00e0 l&rsquo;id\u00e9e de leur repr\u00e9sentation, un obstacle \u00e0 un dessin d&rsquo;ensemble. Ce n&rsquo;est qu&rsquo;en insistant sur l&rsquo;aspect de certaines surfaces poilues qu&rsquo;ils conc\u00e9d\u00e8rent presque \u00e0 repr\u00e9senter celles-ci non comme ils la voyaient dans la loupe, mais sur toute la surface de leur dessin d&rsquo;ensemble. L&rsquo;extrapolation fut alors une cons\u00e9quence de leur volont\u00e9 de repr\u00e9senter l&rsquo;objet comme il le voyaient \u00e0 l&rsquo;\u0153il nu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Par contre, l&rsquo;utilisation d&rsquo;une l\u00e9gende pour pr\u00e9ciser les d\u00e9tails de leurs dessins n&rsquo;a fait aucun probl\u00e8me. Certes les mots manquaient et leur questionnement \u00e0 propos de ceux qu&rsquo;ils ne connaissaient pas fut grand, mais indiquer par des fl\u00e8ches la partie pr\u00e9cise d\u00e9sign\u00e9e pas le nom, \u00e9tait pour eux une \u00e9vidence.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"> Finalement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La complexit\u00e9 des observations avec un loupe, complexit\u00e9 li\u00e9e \u00e0 l&rsquo;instrument, nous a montr\u00e9 qu&rsquo;il \u00e9tait n\u00e9cessaire de revenir sur l&rsquo;utilisation de cet instrument sur des cas tr\u00e8s simples en indiquant l&rsquo;int\u00e9r\u00eat d&rsquo;une repr\u00e9sentation lacunaire, parce que pas globale, mais agrandie des objets.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dehors \u00ab Observer \u00bb Objectifs Le travail d&rsquo;un scientifique consiste \u00e0 r\u00e9fl\u00e9chir, observer, r\u00e9fl\u00e9chir, observer, d\u00e9crire, ordonner, organiser, chercher, d\u00e9crire, r\u00e9ordonner, structurer, un peu comprendre, restructurer, &#8230; Il s&rsquo;agissait aujourd&rsquo;hui d&rsquo;observer, de r\u00e9fl\u00e9chir, d&rsquo;observer et de d\u00e9crire. Pr\u00e9liminaire Se trouver dans un jardin l&rsquo;hiver est un pr\u00e9liminaire \u00e0 sa description l&rsquo;\u00e9t\u00e9. Les \u00e9l\u00e8ves devaient donc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3824,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[32,47,46],"tags":[],"class_list":["post-3808","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-classe-celine-guyot-et-audrey-thiebaud-2021-22","category-dehors","category-travaux-202526","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/posts\/3808","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/comments?post=3808"}],"version-history":[{"count":23,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/posts\/3808\/revisions"}],"predecessor-version":[{"id":3852,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/posts\/3808\/revisions\/3852"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/media\/3824"}],"wp:attachment":[{"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/media?parent=3808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/categories?post=3808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.collegedelouest.ch\/wordpress\/wp-json\/wp\/v2\/tags?post=3808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}