![\"4\"](\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/01\/41.jpg\")
<\/a>Han comen\u00e7at reflexionant sobre de quines maneres es pot investigar la riera. Amb l’ajuda de l’aplicaci\u00f3 Google Earth han situat on \u00e9s la riera i han fet l’inventari del material que cal endur-se per fer el treball de camp.<\/p>\nUn cop a la riera n’han fet una descripci\u00f3 i, ja per grups, han mesurat la temperatura de l’aigua i la de l’aire. Amb un pot de vidre han olorat l’aigua, han mirat la seva transpar\u00e8ncia i han comprovat si feia escuma. Amb una cinta m\u00e8trica, un flex\u00f2metre, un tap de suro i un cron\u00f2metre han pres dades per calcular despr\u00e9s la velocitat i el cabal de la riera.
\nA continuaci\u00f3 han agafat mostres dels vegetals que viuen dins i al voltant de la riera i els han identificat, tot especificant si eren al\u00b7l\u00f2ctons o aut\u00f2ctons.
\nLa recollida dels invertebrats i vertebrats que viuen a la riera ha estat la part m\u00e9s motivadora; el segon dia han trobat for\u00e7a m\u00e9s esp\u00e8cies diferents: nimfes d’ef\u00edmeres, d’espiadimonis i de lib\u00e8l\u00b7lules, gambetes d’aigua dol\u00e7a, larves de mosca negra , mosquits d’eixam, sabaters, nedadors d’esquena, barretets, limnees i un barb cua-roja.
\nUn cop a l’aula, la identificaci\u00f3 dels animals ha estat for\u00e7a \u00e0gil ja que coneixien molt b\u00e9 el maneig de la lupa binocular; la suma dels \u00edndexs bi\u00f2tics de contaminaci\u00f3 dels invertebrats ens ha revelat una vegada m\u00e9s la qualitat mediocre de la riera.<\/p>\n
El primer dia vam poder viure en directe la metamorfosi d’una ef\u00edmera que, un cop convertida en adult aeri, ens va deixar la seva muda que hem pogut observar els dos dies!<\/p>\n
Fins a la propera!<\/p>\n
Si voleu saber m\u00e9s coses d’aquests animalons podeu consultar al men\u00fa superior d’aquest web, l’apartat de divulgaci\u00f3 dedicat als animals de la riera.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
El dijous i divendres 21 i 22 de gener els alumnes de 1r d’ESO \u00a0d’aquest Institut del barri de Sants de Barcelona han fet un estudi a fons d’alguns trams de la nostra riera. Han comen\u00e7at reflexionant sobre de quines maneres es pot investigar la riera. Amb l’ajuda de l’aplicaci\u00f3 Google Earth han situat on […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","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,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[265],"tags":[],"class_list":["post-3562","post","type-post","status-publish","format-standard","hentry","category-visites"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/3562","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/comments?post=3562"}],"version-history":[{"count":0,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/3562\/revisions"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=3562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=3562"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=3562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}