{"id":22914,"date":"2015-03-26T15:52:07","date_gmt":"2015-03-26T14:52:07","guid":{"rendered":"http:\/\/fatherben.se\/wordpress\/?p=22914"},"modified":"2015-03-27T12:24:30","modified_gmt":"2015-03-27T11:24:30","slug":"pisa-lite-om-bakgrunden","status":"publish","type":"post","link":"https:\/\/fatherben.se\/wordpress\/pisa-lite-om-bakgrunden\/","title":{"rendered":"PISA- RESUlTATEN  lite om bakgrunden"},"content":{"rendered":"<p>UTVECKLINGEN AV GRUNDSKOLANS MATEMATIK F\u00d6RRA \u00c5RHUNDRADET LADE GRUNDEN F\u00d6R PISA resultaten p\u00e5 2000-talet<br \/>\n<strong>\u00c5r 1950:<\/strong> En bonde s\u00e4ljer en s\u00e4ck potatis f\u00f6r 20 kr. Framst\u00e4llningskostnaderna \u00e4r 4\/5 av priset. Hur stor \u00e4r vinsten?<\/p>\n<p><strong>\u00c5r 1960:<\/strong> En bonde s\u00e4ljer en s\u00e4ck potatis f\u00f6r 20 kr. Framst\u00e4llningskostnaden \u00e4r 16 kr. Var sn\u00e4ll och r\u00e4kna ut vinsten.<\/p>\n<p><strong>\u00c5r 1970<\/strong>: En bonde s\u00e4ljer en m\u00e4ngd potatis (A) f\u00f6r en m\u00e4ngd pengar (B). B \u00e4r m\u00e4ngden av alla delar B f\u00f6r vilka g\u00e4ller: B \u00e4r en krona. I streckm\u00e4ngd m\u00e5ste Du f\u00f6r m\u00e4ngden B g\u00f6ra (\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/) tjugo sm\u00e5 streck, ett f\u00f6r varje krona. M\u00e4ngden av framst\u00e4llningskostnaderna (C) \u00e4r sexton (\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/) sm\u00e5 streck. Rita bilden av m\u00e4ngden C som en delm\u00e4ngd av m\u00e4ngden B och ange resultatm\u00e4ngden (D) som ger svaret p\u00e5 fr\u00e5gan: Vilken storlek har vinstm\u00e4ngden?<\/p>\n<p><strong>\u00c5r 1980<\/strong>: En bonde s\u00e4ljer en s\u00e4ck potatis f\u00f6r 20 kr. Framst\u00e4llningskostnaderna \u00e4r 4\/5 d\u00e4rav, vilket \u00e4r 16 kr. Vinsten uppg\u00e5r till 1\/5, lika med 4 kr. Stryk under ordet &#8221;potatis&#8221; och diskutera det med en kamrat.<\/p>\n<p>Jag tycker detta \u00e4r ett utm\u00e4rkt bevis p\u00e5 en riktig utveckling, p\u00e5pekar experten Pia Get. Vid en unders\u00f6kning fann vi att n\u00e4stan alla elever klarade 1980 \u00e5rs uppgift. B\u00e5de att stryka under r\u00e4tt ord och att klara den sociala samvaron med sina kamrater. F\u00f6r s\u00e4rskilt l\u00e5gpresterande kommer vi i en kommande version att redan i uppgiften stryka under ordet &#8221;potatis&#8221; vilket ger mer tid \u00e5t kamratsamtal.<\/p>\n<p>Fr\u00e5n broder Lars<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UTVECKLINGEN AV GRUNDSKOLANS MATEMATIK F\u00d6RRA \u00c5RHUNDRADET LADE GRUNDEN F\u00d6R PISA resultaten p\u00e5 2000-talet \u00c5r 1950: En bonde s\u00e4ljer en s\u00e4ck potatis f\u00f6r 20 kr. Framst\u00e4llningskostnaderna \u00e4r 4\/5 av priset. Hur stor \u00e4r vinsten? \u00c5r 1960: En bonde s\u00e4ljer en s\u00e4ck potatis f\u00f6r 20 kr. Framst\u00e4llningskostnaden \u00e4r 16 kr. Var sn\u00e4ll och r\u00e4kna ut vinsten. \u00c5r [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[7],"tags":[2771,2772],"class_list":["post-22914","post","type-post","status-publish","format-standard","hentry","category-ett-gott-skratt","tag-pisa-matte","tag-skola"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1IAXy-5XA","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":20248,"url":"https:\/\/fatherben.se\/wordpress\/2-pisa-problem\/","url_meta":{"origin":22914,"position":0},"title":"2 PISA problem","author":"admin","date":"2014-09-12","format":false,"excerpt":"A l\u00e5nade 50 kr var av B och C f\u00f6r att k\u00f6pa en bok.Den kostade 97 kr och A fick 3 kr tillbaka.Av dem gav han B 1 kr och C 1 kr och var s\u00e5ledes skyldig 49 kr till dem vardera, d.v.s. 98 kr.Men A har bara 1 kr\u2026","rel":"","context":"I \u201d2 JOKES\u201d","block_context":{"text":"2 JOKES","link":"https:\/\/fatherben.se\/wordpress\/category\/ett-gott-skratt\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":13797,"url":"https:\/\/fatherben.se\/wordpress\/bonden-faret-och-konsulten\/","url_meta":{"origin":22914,"position":1},"title":"Bonden, f\u00e5ret och konsulten","author":"bengt39","date":"2021-08-17","format":false,"excerpt":"ursprungligen publicerad 2014 En bonde st\u00e5r och passar en stor flock f\u00e5r, som betar p\u00e5 fj\u00e4llet. 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