{"id":9780,"date":"2019-01-11T20:52:08","date_gmt":"2019-01-11T19:52:08","guid":{"rendered":"http:\/\/agora.xtec.cat\/ses-canovelles\/?p=9780"},"modified":"2019-01-12T17:46:38","modified_gmt":"2019-01-12T16:46:38","slug":"laboratori-de-matematiques-comptar-grans-darros","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ses-canovelles\/general\/laboratori-de-matematiques-comptar-grans-darros\/","title":{"rendered":"Laboratori de matem\u00e0tiques: Comptar grans d\u2019arr\u00f2s"},"content":{"rendered":"<p>Seguint les idees plantejades per <a href=\"https:\/\/twitter.com\/lluismora?lang=ca\">@lluismora<\/a> al Curs de Projectes de matem\u00e0tiques a secund\u00e0ria, hem plantejat una activitat per estimar el nombre de grans d\u2019arr\u00f2s en un got.<\/p>\n<p>Hem partit de la <a href=\"http:\/\/www.ccma.cat\/tv3\/alacarta\/telenoticies-vespre\/un-algoritme-catala-clava-la-xifra-de-persones-que-hi-ha-en-una-manifestacio\/video\/5761630\/#\">not\u00edcia de TV3<\/a> sobre el nou algoritme desenvolupat pel Centre de Visi\u00f3 per Computador per comptar el nombre de persones en una manifestaci\u00f3<\/p>\n<p>No ten\u00edem cap manifestaci\u00f3 a prop, per\u00f2 s\u00ed gots plens de grans d\u2019arr\u00f2s. En grups de 4-5 els alumnes han desenvolupat estrat\u00e8gies per a fer el recompte, com:<\/p>\n<ul>\n<li>Comptar la densitat de grans per quadrat en una llibreta quadriculada, i despr\u00e9s estimar-ne el total:<a href=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rB-4-1.jpg\">:\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9787 size-thumbnail alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rB-4-1-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a> <a href=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-7-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9790 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-7-2-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9788 size-thumbnail alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-1-1-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Pesar un grup de pocs grans (entre 20 i 200, segons la precisi\u00f3 de la balan\u00e7a) per a trobar la densitat de grans per gram, i despr\u00e9s estimar-ne el total.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9792 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-5-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9791 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-2-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Fer dos o tres grups grans, comptar els grans d\u2019un grup i multiplicar el resultat per 2 o 3.<img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9793 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rB-3-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Al final, hem comparat resultats, m\u00e8todes i mida de la mostra i hem fet la mitjana dels resultats de cada classe.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9794 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rA-8-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/p>\n<p><a href=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rB-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-9795 alignleft\" src=\"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-content\/uploads\/usu87\/2019\/01\/3rB-5-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Seguint les idees plantejades per <a href=\"https:\/\/twitter.com\/lluismora?lang=ca\">@lluismora<\/a> al Curs de Projectes de matem\u00e0tiques a secund\u00e0ria, hem plantejat una activitat per estimar el nombre de grans d\u2019arr\u00f2s en un got.<br \/>\nHem partit de la <a href=\"http:\/\/www.ccma.cat\/tv3\/alacarta\/telenoticies-vespre\/un-algoritme-catala-clava-la-xifra-de-persones-que-hi-ha-en-una-manifestacio\/video\/5761630\/#\">not\u00edcia de TV3<\/a> sobre el nou algoritme desenvolupat pel Centre de Visi\u00f3&hellip;  <a href=\"https:\/\/agora.xtec.cat\/ses-canovelles\/general\/laboratori-de-matematiques-comptar-grans-darros\/\" title=\"Read Laboratori de matem\u00e0tiques: Comptar grans d\u2019arr\u00f2s\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":9793,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[6,1,29],"tags":[],"class_list":["post-9780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eso-3","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/posts\/9780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/comments?post=9780"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/posts\/9780\/revisions"}],"predecessor-version":[{"id":9801,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/posts\/9780\/revisions\/9801"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/media\/9793"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/media?parent=9780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/categories?post=9780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ses-canovelles\/wp-json\/wp\/v2\/tags?post=9780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}