{"id":2243,"date":"2014-01-09T21:22:22","date_gmt":"2014-01-09T19:22:22","guid":{"rendered":"http:\/\/killfroken.se\/?p=2243"},"modified":"2014-01-09T21:22:22","modified_gmt":"2014-01-09T19:22:22","slug":"en-teori-om-att-forstora-och-forminska","status":"publish","type":"post","link":"https:\/\/killfroken.se\/?p=2243","title":{"rendered":"En teori om att f\u00f6rstora och f\u00f6rminska."},"content":{"rendered":"<p>Jag har en teori. Helt och h\u00e5llet baserad p\u00e5 emperi.<\/p>\n<p>Jag f\u00f6rs\u00f6ker l\u00e4ra mina yngre elever inneb\u00f6rden av att f\u00f6rminska och f\u00f6rstora geometriska objekt. Det \u00e4r en f\u00f6rberedelse f\u00f6r att de senare fram ska f\u00e5 l\u00e4ra sig om skala och hur man anv\u00e4nder en skala f\u00f6r att omvandla str\u00e4ckor. I praktiken inneb\u00e4r det att jag med hj\u00e4lp av dokumentkameran ritar en figur (enkla kvadrater och rektanglar) p\u00e5 centimeterrutat papper och sedan f\u00e5r de ensamma, i par eller alla 16-17 tillsammans resonera kring storleken p\u00e5 en figur som \u00e4r dubbelt s\u00e5 stor respektive h\u00e4lften s\u00e5 stor.<\/p>\n<p>De f\u00f6rst\u00e5r principen att b\u00e5de l\u00e4ngden och bredden ska f\u00f6rdubblas\/halveras och att det inneb\u00e4r att figurens area f\u00f6r\u00e4ndras i st\u00f6rre takt \u00e4n man vid f\u00f6rsta anblick kan tro.<\/p>\n<p>Det intressanta \u00e4r att de till en b\u00f6rjan har mycket l\u00e4ttare f\u00f6r att f\u00f6rminska \u00e4n att f\u00f6rstora. <strong>Vad kan det bero p\u00e5?<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jag har en teori. Helt och h\u00e5llet baserad p\u00e5 emperi. Jag f\u00f6rs\u00f6ker l\u00e4ra mina yngre elever inneb\u00f6rden av att f\u00f6rminska och f\u00f6rstora geometriska objekt. Det \u00e4r en f\u00f6rberedelse f\u00f6r att de senare fram ska f\u00e5 l\u00e4ra sig om skala och hur man anv\u00e4nder en skala f\u00f6r att omvandla str\u00e4ckor. I praktiken inneb\u00e4r det att jag [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-2243","post","type-post","status-publish","format-standard","hentry","category-dessa"],"author_data":{"name":"Killfr\u00f6ken","href":"https:\/\/killfroken.se\/?author=2"},"featured_image_src":"https:\/\/killfroken.se\/wp-includes\/images\/media\/default.svg","_links":{"self":[{"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/posts\/2243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/killfroken.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2243"}],"version-history":[{"count":1,"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/posts\/2243\/revisions"}],"predecessor-version":[{"id":2244,"href":"https:\/\/killfroken.se\/index.php?rest_route=\/wp\/v2\/posts\/2243\/revisions\/2244"}],"wp:attachment":[{"href":"https:\/\/killfroken.se\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/killfroken.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/killfroken.se\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}