{"id":6042,"date":"2026-01-31T12:00:37","date_gmt":"2026-01-31T12:00:37","guid":{"rendered":"https:\/\/flatarmal.is\/?p=6042"},"modified":"2026-01-31T12:21:58","modified_gmt":"2026-01-31T12:21:58","slug":"reiknirit-reiknihugsun-og-forritun-nyjar-aherslur-i-namskra","status":"publish","type":"post","link":"https:\/\/flatarmal.is\/?p=6042","title":{"rendered":"Reiknirit, reiknihugsun og forritun: N\u00fdjar \u00e1herslur \u00ed n\u00e1mskr\u00e1"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Bjarnhei\u00f0ur Kristinsd\u00f3ttir, Freyja Hreinsd\u00f3ttir, Ing\u00f3lfur G\u00edslason og J\u00f3hann \u00d6rn Sigurj\u00f3nsson.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00fat\u00edmasamf\u00e9lag er undirlagt reikniritum (e<em>. algorithms<\/em>). Reiknirit er n\u00e1kv\u00e6mlega skilgreind r\u00f6\u00f0 af a\u00f0ger\u00f0um sem skila tiltekinni ni\u00f0urst\u00f6\u00f0u \u00fat fr\u00e1 gefnum forsendum. Oftast eru reiknirit ger\u00f0 til a\u00f0 leysa \u00e1kve\u00f0i\u00f0 verkefni. Hugsi\u00f0 til d\u00e6mis um hvernig \u00fei\u00f0 leggi\u00f0 saman t\u00f6lurnar 13 og 18 (e\u00f0a einhverjar a\u00f0rar tveggja stafa t\u00f6lur) og pr\u00f3fi\u00f0 a\u00f0 l\u00fdsa \u00fev\u00ed hvernig \u00fei\u00f0 fari\u00f0 a\u00f0. Ef l\u00fdsingin er \u00feannig \u00far gar\u00f0i ger\u00f0 a\u00f0 a\u00f0rir geti fylgt henni \u00fe\u00e1 er um reiknirit a\u00f0 r\u00e6\u00f0a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknirit liggja a\u00f0 baki \u00fdmsu \u00ed samf\u00e9laginu. Me\u00f0al annars reikna \u00feau \u00fat:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>hva\u00f0a f\u00f3lk kemst \u00e1 \u00feing eftir a\u00f0 atkv\u00e6\u00f0i \u00ed kosningum hafa veri\u00f0 talin,<\/li>\n\n\n\n<li>hva\u00f0a augl\u00fdsing birtist n\u00e6st \u00ed vafranum,<\/li>\n\n\n\n<li>m\u00e1na\u00f0arlegar afborganir af l\u00e1num,<\/li>\n\n\n\n<li>hvernig spjallmenni svarar spurningu,<\/li>\n\n\n\n<li>hvar n\u00e6sta kaffih\u00fas er \u00e1 kortinu \u00ed s\u00edmanum,<\/li>\n\n\n\n<li>hvernig snjall\u00far virkar,<\/li>\n\n\n\n<li>hvert flugv\u00e9l skuli stefna,<\/li>\n\n\n\n<li>hvernig ryksuguv\u00e9lmenni fer\u00f0ast um \u00edb\u00fa\u00f0.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknirit hafa \u00feannig talsver\u00f0 \u00e1hrif \u00e1 daglegan veruleika okkar \u00fer\u00e1tt fyrir a\u00f0 vi\u00f0 skynjum ekki endilega \u00feau \u00f3tal reiknirit sem eru a\u00f0 verki og st\u00fdra svo m\u00f6rgu. Vi\u00f0 vitum ekki hva\u00f0 \u00feau eru n\u00e1kv\u00e6mlega a\u00f0 reikna. \u00deau eru skrifu\u00f0 af f\u00f3lki og eru yfirleitt framkv\u00e6md (keyr\u00f0) \u00ed t\u00f6lvum, v\u00e9lum og t\u00e6kjum, \u00fear sem \u00feau eru \u00fatf\u00e6r\u00f0 sem forrit (e<em>. program<\/em>). Forrit er framsetning \u00e1 reikniriti sem hentar t\u00f6lvu, \u00fea\u00f0 er a\u00f0 segja r\u00f6\u00f0 lei\u00f0beininga sem t\u00f6lva fylgir til a\u00f0 vinna visst verkefni. D\u00e6mi um forrit sem m\u00f6rg kannast vi\u00f0 eru ritvinnsluforrit og t\u00f6lvuleikir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd n\u00fdlega uppf\u00e6r\u00f0um st\u00e6r\u00f0fr\u00e6\u00f0ihluta a\u00f0aln\u00e1mskr\u00e1r (2024) eru \u00ed fyrsta skipti h\u00e6fnivi\u00f0mi\u00f0 tengd reiknihugsun og forritun en einnig kemur fram a\u00f0 nemendur skuli \u00f6\u00f0last h\u00e6fni \u00ed \u00fev\u00ed a\u00f0 nota uppl\u00fdsingat\u00e6kni \u00ed st\u00e6r\u00f0fr\u00e6\u00f0i og \u00ed stu\u00f0ningsefni er v\u00edsa\u00f0 \u00ed notkun kvikra r\u00famfr\u00e6\u00f0iforrita \u00e1 bor\u00f0 vi\u00f0&nbsp;<a href=\"https:\/\/geogebra.org\/\">GeoGebru<\/a>. \u00de\u00f3 a\u00f0 reiknihugsun og forritun s\u00e9u n\u00fd hugt\u00f6k \u00ed st\u00e6r\u00f0fr\u00e6\u00f0ihluta a\u00f0aln\u00e1mskr\u00e1r \u00e1 \u00cdslandi hafa \u00feau lengi veri\u00f0 hluti af n\u00e1mskr\u00e1m \u00e1 Nor\u00f0url\u00f6ndum auk margra annarra landa \u00ed Evr\u00f3pu (Bocconi og f\u00e9lagar, 2022). Einnig er reiknihugsun n\u00fa \u00ed st\u00e6r\u00f0fr\u00e6\u00f0iramma PISA ranns\u00f3knarinnar (OECD, 2022) enda hefur v\u00e6gi forritunar \u00ed ranns\u00f3knum og \u00fer\u00f3un, b\u00e6\u00f0i \u00ed h\u00e1sk\u00f3lum og fyrirt\u00e6kjum aukist miki\u00f0 \u00e1 s\u00ed\u00f0ustu \u00e1rum. Reiknihugsun og forritun \u00ed st\u00e6r\u00f0fr\u00e6\u00f0ihluta a\u00f0aln\u00e1mskr\u00e1r mi\u00f0a \u00fe\u00f3 ekki a\u00f0 \u00fev\u00ed a\u00f0 kenna nemendum tiltekin forritunarm\u00e1l (e<em>. programming language<\/em>) e\u00f0a gera nemendur a\u00f0 atvinnuforriturum. Markmi\u00f0i\u00f0 er a\u00f0 nemendur skilji, geti gagnr\u00fdnt og haft \u00e1hrif \u00e1 \u00feau reiknirit sem eru v\u00ed\u00f0a a\u00f0 verki \u00ed samf\u00e9lagi okkar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknirit hafa veri\u00f0 til \u00ed \u00e1r\u00fe\u00fasundir og byggja \u00e1 g\u00f6mlum grunni fr\u00e1 \u00fev\u00ed l\u00f6ngu \u00e1\u00f0ur en h\u00e6gt var a\u00f0 l\u00e1ta t\u00f6lvur framkv\u00e6ma \u00feau. Eftir a\u00f0 vinnu vi\u00f0 \u00fatreikninga var \u00fatvista\u00f0 til v\u00e9la hafa afl og notkunarm\u00f6guleikar reiknirita margfaldast. Eitt af \u00fev\u00ed sem er mikilv\u00e6gt fyrir n\u00fat\u00edmamanneskju a\u00f0 skilja er hva\u00f0 h\u00e6gt s\u00e9 a\u00f0 l\u00e1ta t\u00f6lvur gera og hva\u00f0 ekki.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00deetta er \u00e1 vissan h\u00e1tt spurning um \u00fea\u00f0 hva\u00f0 h\u00e6gt s\u00e9 a\u00f0 reikna \u00fat og hva\u00f0 ekki. Skilningur \u00e1 \u00feessu er falinn \u00ed reiknihugsun (e<em>. computational thinking<\/em>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">N\u00e1nar um reiknihugsun<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknihugsun er vitsmunaferli sem felur \u00fea\u00f0 \u00ed s\u00e9r a\u00f0 setja fram verkefni og lausnara\u00f0fer\u00f0 \u00feess \u00e1 \u00feann h\u00e1tt a\u00f0 t\u00f6lva (e\u00f0a hver sem reiknar) geti fylgt a\u00f0fer\u00f0inni og leyst verkefni\u00f0. Sl\u00edk a\u00f0fer\u00f0 fellur undir \u00fea\u00f0 sem kallast reiknirit. Reiknihugsun hefur l\u00edka veri\u00f0 nefnd hugsunarh\u00e1ttur forritunar og t\u00f6lvunarhugsun. Reiknihugsun m\u00e1 rekja aftur til verka Seymour Papert (1980) en Jeanette Wing kom hugtakinu \u00e1 korti\u00f0 me\u00f0 stuttri grein \u00e1ri\u00f0 2006. H\u00fan skilgreindi reiknihugsun sem \u00fea\u00f0 a\u00f0 \u201eleysa vandam\u00e1l, hanna kerfi, og skilja mannlega heg\u00f0un, me\u00f0 \u00fev\u00ed a\u00f0 byggja \u00e1 grundvallarhugt\u00f6kum t\u00f6lvunarfr\u00e6\u00f0innar\u201c (Wing, 2006, bls. 33). Ekki er allt fr\u00e6\u00f0af\u00f3lk samm\u00e1la um n\u00e1kv\u00e6ma merkingu hugtaksins reiknihugsun en \u00fe\u00f3 er samkomulag um eftirfarandi megin\u00fe\u00e6tti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>a\u00f0 brj\u00f3ta verkefni ni\u00f0ur \u00ed sm\u00e6rri einingar (e<em>. decomposition<\/em>) sem svo eru leystar hverjar fyrir sig;<\/li>\n\n\n\n<li>a\u00f0 koma auga \u00e1 mynstur (e<em>. pattern recognition<\/em>) \u00ed g\u00f6gnum e\u00f0a a\u00f0fer\u00f0um og taka \u00feannig eftir endurteknum e\u00f0a svipu\u00f0um ferlum \u00ed verkefnum;<\/li>\n\n\n\n<li>a\u00f0 hanna og nota abstraksj\u00f3nir (e<em>. abstraction<\/em>) e\u00f0a me\u00f0 \u00f6\u00f0rum or\u00f0um a\u00f0 draga fram mikilv\u00e6ga eiginleika fyrirb\u00e6ra en leyfa s\u00e9r a\u00f0 gleyma e\u00f0a l\u00edta fram hj\u00e1 sm\u00e6rri atri\u00f0um;<\/li>\n\n\n\n<li>a\u00f0 hugsa og setja fram lausn sem r\u00f6\u00f0 af n\u00e1kv\u00e6mlega skilgreindum skrefum sem hver sem er, t\u00f6lva e\u00f0a manneskja, getur fari\u00f0 eftir \u2013 sums\u00e9 a\u00f0 b\u00faa til reiknirit (e<em>. algorithm<\/em>) til a\u00f0 leysa verkefni.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">D\u00e6mi 1: A\u00f0 teikna ferning<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd n\u00fdjum h\u00e6fnivi\u00f0mi\u00f0um fyrir reiknihugsun og forritun vi\u00f0 lok 4. bekkjar kemur fram a\u00f0 nemandi geti \u201eb\u00fai\u00f0 til einf\u00f6ld reiknirit og tj\u00e1\u00f0 \u00feau me\u00f0 \u00fev\u00ed a\u00f0 nota breytur, skilyr\u00f0i og lykkjur\u201c. \u00deetta er metna\u00f0arfullt og \u00feess vir\u00f0i a\u00f0 \u00fatsk\u00fdra vi\u00f0 hva\u00f0 er \u00e1tt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Breyta<\/strong>&nbsp;e\u00f0a breytist\u00e6r\u00f0 (e<em>. variable<\/em>) \u00ed forritun er fr\u00e1brug\u00f0in breytu \u00ed st\u00e6r\u00f0fr\u00e6\u00f0i. L\u00fdsa m\u00e1 breytu \u00ed forritun sem nafngreindu \u00edl\u00e1ti e\u00f0a h\u00f3lfi sem geymir uppl\u00fdsingar sem t\u00f6lvan notar og getur breytt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Skilyr\u00f0i<\/strong>&nbsp;(e<em>. conditional<\/em>) \u00ed forritun segir t\u00f6lvunni hva\u00f0 \u00e1 a\u00f0 gera ef eitthva\u00f0 er satt og hva\u00f0 \u00e1 a\u00f0 gera ef \u00fea\u00f0 er \u00f3satt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lykkja<\/strong>&nbsp;(<em>e. loop<\/em>) er r\u00f6\u00f0 af a\u00f0ger\u00f0um sem eru endurteknar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sko\u00f0um d\u00e6mi um reiknirit sem gjarnan er unni\u00f0 me\u00f0 nemendum \u00e1 yngsta stigi. Hvernig er h\u00e6gt a\u00f0 teikna ferning, svo sem \u00ed snj\u00f3 e\u00f0a sand? H\u00e9r er skref-fyrir-skref l\u00fdsing:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n\n\n\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n\n\n\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n\n\n\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u00deessa l\u00fdsingu m\u00e6tti \u00fer\u00f3a \u00e1fram og \u00fatf\u00e6ra me\u00f0 lykkju:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Endurtaktu fj\u00f3rum sinnum:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u00deannig ver\u00f0a lei\u00f0beiningarnar styttri og au\u00f0l\u00e6silegri.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Einnig m\u00e1 \u00fatf\u00e6ra lykkjuna me\u00f0 skilyr\u00f0i og breytu:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd upphafi er n = 0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c1 me\u00f0an n &lt; 4 skaltu endurtaka:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Far\u00f0u \u00e1fram 10 skref<\/li>\n\n\n\n<li>Sn\u00fa\u00f0u \u00fe\u00e9r 90\u00b0 til h\u00e6gri<\/li>\n\n\n\n<li>H\u00e6kka\u00f0u n um 1<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd \u00feessari lykkju var breytan&nbsp;<em>n<\/em>&nbsp;skilgreind og skipanar\u00f6\u00f0in endurtekin a\u00f0 gefnu \u00fev\u00ed skilyr\u00f0i a\u00f0&nbsp;<em>n<\/em>&nbsp;s\u00e9 l\u00e6gri tala en 4. Lykkjur eru mj\u00f6g oft \u00feannig a\u00f0 skipanirnar sem \u00ed henni felast eru endurteknar me\u00f0 einhverjum reglulegum tilbrig\u00f0um a\u00f0 \u00fev\u00ed gefnu a\u00f0 eitthvert skilyr\u00f0i s\u00e9 uppfyllt.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">D\u00e6mi 2: A\u00f0 teikna reglulegan marghyrning<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e9r er anna\u00f0 verkefni: Hvernig er h\u00e6gt l\u00e1ta t\u00f6lvu teikna reglulegan marghyrning me\u00f0 hva\u00f0a fj\u00f6lda hli\u00f0a sem er? Sama reikniriti\u00f0 \u00e1 a\u00f0 geta skila\u00f0 jafnhli\u00f0a \u00fer\u00edhyrningi, ferningi, reglulegum fimmhyrningi og&nbsp;<em>n<\/em>-hyrningi fyrir hva\u00f0a heilt\u00f6lu&nbsp;<em>n &gt; 2<\/em>&nbsp;sem er. Vi\u00f0 sem h\u00f6nnum reikniriti\u00f0 \u00feurfum a\u00f0 hafa \u00ed huga hvers konar fyrirm\u00e6li t\u00f6lvan skilur. Byrjum \u00e1 a\u00f0 hugsa okkur hvernig vi\u00f0 g\u00e6tum sagt manneskju me\u00f0 penna hvernig h\u00fan ber sig a\u00f0. Vi\u00f0 gerum r\u00e1\u00f0 fyrir a\u00f0 h\u00fan geti gert tvennt: 1) teikna\u00f0 beint strik af gefinni lengd og 2) sn\u00fai\u00f0 stefnunni sem h\u00fan teiknar striki\u00f0 hverju sinni.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oft er gott a\u00f0 hugsa um eitt tilteki\u00f0 d\u00e6mi fyrst um sinn. \u00cd d\u00e6mi 1 s\u00e1um vi\u00f0 reiknirit til a\u00f0 teikna ferning. Reikniriti\u00f0 sem l\u00fdsti teikningu fernings m\u00e6tti til d\u00e6mis \u00fatf\u00e6ra \u00ed sj\u00f3nr\u00e6na forritunarumhverfinu<a href=\"http:\/\/scratch.mit.edu\/\">&nbsp;Scratch<\/a>. \u00dear sem 10 skref \u00e1 t\u00f6lvuskj\u00e1 eru afar stutt vegalengd \u00fe\u00e1 breytum vi\u00f0 \u00far 10 skrefum \u00ed 100 skref og skrifum forriti\u00f0 \u00e1 eftirfarandi h\u00e1tt:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-683x1024.png\" alt=\"\" class=\"wp-image-6045\" style=\"aspect-ratio:0.6670111972437553;width:313px;height:auto\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-683x1024.png 683w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-200x300.png 200w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-768x1152.png 768w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-300x450.png 300w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1-850x1275.png 850w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/scratch-ferningur-1.png 1024w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Fyrstu \u00ferj\u00e1r blokkirnar eru skipanir sem b\u00e6tt er vi\u00f0 af t\u00e6knilegum \u00e1st\u00e6\u00f0um. Setja \u00fearf forriti\u00f0 \u00ed gang me\u00f0 \u00fev\u00ed a\u00f0 smella \u00e1 gr\u00e6nt flagg, segja \u00fearf hva\u00f0a verkf\u00e6ri er nota\u00f0 (h\u00e9r er \u00fea\u00f0 penni) og skj\u00e1inn \u00fearf a\u00f0 hreinsa \u00ed upphafi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00datkoman \u00feegar vi\u00f0 keyrum forriti\u00f0 ver\u00f0ur \u00feessi:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2-1024x683.png\" alt=\"\" class=\"wp-image-6070\" style=\"aspect-ratio:1.4992888417882142;width:471px;height:auto\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2-1024x683.png 1024w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2-300x200.png 300w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2-768x512.png 768w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2-850x567.png 850w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/ferningur-utkoma-2.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Svona er h\u00e6gt a\u00f0 teikna ferning. En hva\u00f0 me\u00f0 reglulegan \u00fer\u00edhyrning, fimmhyrning, sexhyrning og svo framvegis? Vi\u00f0 t\u00f6kum eftir \u00fev\u00ed a\u00f0 \u00fea\u00f0 \u00e6tti a\u00f0 vera h\u00e6gt a\u00f0 teikna a\u00f0ra reglulega marghyrninga me\u00f0 svipu\u00f0um h\u00e6tti, \u00fea\u00f0 er me\u00f0 \u00fev\u00ed a\u00f0 endurtaka h\u00e6filega oft \u00fea\u00f0 a\u00f0 teikna strik og sn\u00faa h\u00e6filega miki\u00f0. H\u00e9r h\u00f6fum vi\u00f0 komi\u00f0 auga \u00e1 mynstur: eitthva\u00f0 sem er eins vi\u00f0 marga \u00f3l\u00edka hluti, einhver regluleiki. Vi\u00f0 h\u00f6fum l\u00edka dregi\u00f0 \u00fat \u00feann eiginleika sem skiptir m\u00e1li, sem er fj\u00f6ldi horna. Vi\u00f0 getum l\u00edka sagt \u00ed lei\u00f0inni a\u00f0 vi\u00f0 h\u00f6fum broti\u00f0 verkefni\u00f0 ni\u00f0ur \u00ed minni verkefni, fr\u00e1 \u00fev\u00ed a\u00f0 teikna heilan ferning \u00ed \u00fea\u00f0 a\u00f0 teikna strik og sn\u00faa fj\u00f3rum sinnum.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00fa \u00feurfum vi\u00f0 a\u00f0 leysa st\u00e6r\u00f0fr\u00e6\u00f0iverkefni\u00f0 og spyrjum okkur: Um hve margar gr\u00e1\u00f0ur \u00fearf a\u00f0 sn\u00faa teiknistefnunni \u00feegar vi\u00f0 teiknum reglulegan n-hyrning? S\u00fa ranns\u00f3kn \u00e6tti a\u00f0 lei\u00f0a \u00ed lj\u00f3s a\u00f0 vi\u00f0 getum reikna\u00f0 st\u00e6r\u00f0 sn\u00faningsins me\u00f0 st\u00e6\u00f0unni 360\u00b0\/n. N\u00fa notum vi\u00f0 okkur breytist\u00e6r\u00f0 (e<em>. variable<\/em>) til \u00feess a\u00f0 halda utan um fj\u00f6lda horna og h\u00e6filegan sn\u00faning.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknirit:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Setjum n = fj\u00f6ldi horna<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reiknum gr\u00e1\u00f0ut\u00f6lu hvers horns og k\u00f6llum hana g, \u00fea\u00f0 er g = 360\u00b0\/n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Setjum pennann ni\u00f0ur<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Endurt\u00f6kum eftirfarandi a\u00f0ger\u00f0ar\u00f6\u00f0 n sinnum:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00f6rum \u00e1fram 100 skref<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sn\u00faum teiknistefnunni um g<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd forritunarm\u00e1linu Scratch getur samsvarandi forrit liti\u00f0 svona \u00fat ef vi\u00f0 veljum b\u00f3kstafinn&nbsp;<em>g&nbsp;<\/em>til a\u00f0 t\u00e1kna gr\u00e1\u00f0ut\u00f6lu sn\u00faningsins:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-683x1024.png\" alt=\"\" class=\"wp-image-6067\" style=\"aspect-ratio:0.6669942331066229;width:316px;height:auto\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-683x1024.png 683w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-200x300.png 200w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-768x1152.png 768w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-300x450.png 300w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1-850x1275.png 850w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/n-hyrningur-1.png 1024w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u00datkoman \u00feegar\u00a0<em>n = 5<\/em>\u00a0v\u00e6ri \u00fe\u00e1 \u00feessi:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1-1024x683.png\" alt=\"\" class=\"wp-image-6065\" style=\"aspect-ratio:1.4992888417882142;width:404px;height:auto\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1-1024x683.png 1024w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1-300x200.png 300w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1-768x512.png 768w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1-850x567.png 850w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/fimmhyrningur-utkoma-1.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ef vi\u00f0 keyrum \u00feetta forrit til \u00feess a\u00f0 teikna reglulegan 20-hyrning lendum vi\u00f0 \u00ed vanda: Myndin ver\u00f0ur of st\u00f3r \u00feegar strikin eru af s\u00f6mu lengd og \u00e1\u00f0ur (100 skref). \u00dev\u00ed \u00fearf a\u00f0 \u00fer\u00f3a forriti\u00f0 \u00e1fram og finna lei\u00f0 til \u00feess a\u00f0 minnka skrefafj\u00f6ldann eftir \u00fev\u00ed sem fj\u00f6ldi hli\u00f0a eykst. \u00dea\u00f0 getur veri\u00f0 verkefni fyrir lesandann a\u00f0 velta fyrir s\u00e9r hvernig megi \u00fatf\u00e6ra \u00feetta (til d\u00e6mis me\u00f0 \u00fev\u00ed a\u00f0 kynna n\u00fdja breytu fyrir skrefafj\u00f6ldann og n\u00fdta skilyr\u00f0i).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd \u00feessu d\u00e6mi s\u00e1um vi\u00f0 hvernig leysa m\u00e1tti verkefni me\u00f0 reiknihugsun, \u00fea\u00f0 er a\u00f0 segja me\u00f0 \u00fev\u00ed a\u00f0 koma auga \u00e1 mynstur, hanna og nota abstraksj\u00f3nir, brj\u00f3ta verkefni og mynstur ni\u00f0ur \u00ed minni einingar, b\u00faa til reiknirit og a\u00f0 lokum t\u00f6lvuforrit til a\u00f0 leysa verkefni\u00f0. Vi\u00f0 notu\u00f0um tv\u00e6r breytur (<em>n<\/em>&nbsp;og&nbsp;<em>g<\/em>) og eina lykkju (endurtaka&nbsp;<em>n<\/em>&nbsp;sinnum) \u00ed forritinu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Forrit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Forrit tekur yfirleitt inntak, til d\u00e6mis tv\u00e6r t\u00f6lur, og reiknar \u00fat fr\u00e1 \u00fev\u00ed \u00feannig a\u00f0 til ver\u00f0i \u00fattak, til d\u00e6mis summa tveggja talna. Forriti\u00f0 h\u00e9r a\u00f0 ofan tekur inn fj\u00f6lda hli\u00f0a og \u201ereiknar \u00fat\u201c marghyrning (\u00ed formi myndar \u00e1 skj\u00e1). Me\u00f0 \u00fev\u00ed a\u00f0 setja saman forrit getum vi\u00f0 me\u00f0al annars<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>b\u00fai\u00f0 til hreyfimynd,<\/li>\n\n\n\n<li>sett fram l\u00edk\u00f6n af kvikum a\u00f0st\u00e6\u00f0um og<\/li>\n\n\n\n<li>n\u00fdtt gagnvirkni.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e6mi um \u00feetta v\u00e6ru hreyfimynd af fiski a\u00f0 synda, l\u00edkan af hraunfl\u00e6\u00f0i fr\u00e1 eldgosi og hnappur \u00ed t\u00f6lvuleik sem l\u00e6tur keng\u00faru hoppa \u00feegar smellt er \u00e1 hann. \u00ddmis grundvallarhugt\u00f6k \u00ed st\u00e6r\u00f0fr\u00e6\u00f0i koma vi\u00f0 s\u00f6gu til a\u00f0 gera \u00feetta m\u00f6gulegt. Me\u00f0al \u00feeirra eru breytist\u00e6r\u00f0ir, j\u00f6fnur, \u00f3j\u00f6fnur, hnit og f\u00f6ll. Auk \u00feess \u00fearf a\u00f0 beita a\u00f0fer\u00f0um forritunar, eins og&nbsp;<em>lykkjum<\/em>&nbsp;til a\u00f0 endurtaka a\u00f0ger\u00f0ir, oft me\u00f0 einhverjum tilbrig\u00f0um, og&nbsp;<em>skilyr\u00f0um<\/em>&nbsp;til a\u00f0 \u00e1kvar\u00f0a hva\u00f0 gera skal \u00fat fr\u00e1 einhverjum forsendum: ef\u2026 \u00fe\u00e1\u2026 annars\u2026(e<em>. if\u2026 then\u2026 else\u2026<\/em>). Yfirleitt er forrit skrifa\u00f0 \u00e1 forritunarm\u00e1li (e<em>. programming language<\/em>) sem f\u00f3lk getur skili\u00f0. D\u00e6mi um forritunarm\u00e1l eru Scratch, Python og JavaScript. \u00deegar forrit er keyrt (framkv\u00e6mt) \u00fe\u00e1 er forritunarm\u00e1li\u00f0 \u00fe\u00fdtt yfir \u00e1 v\u00e9lam\u00e1l (e<em>. machine language<\/em>) sem t\u00f6lvan skilur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">St\u00e6r\u00f0fr\u00e6\u00f0in\u00e1m \u00e6tti a\u00f0 lei\u00f0a til \u00feess a\u00f0 nemendur \u00f6\u00f0list aukna getu til \u00feess a\u00f0 skapa og tj\u00e1 hluti. \u00dea\u00f0 getur til d\u00e6mis veri\u00f0 gagnlegt a\u00f0 geta<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>broti\u00f0 verkefni ni\u00f0ur \u00ed sm\u00e6rri einingar,<\/li>\n\n\n\n<li>sko\u00f0a\u00f0 st\u00f3ru myndina fyrst (sm\u00e6rri atri\u00f0i m\u00e1 s\u00ed\u00f0an sko\u00f0a s\u00ed\u00f0ar),<\/li>\n\n\n\n<li>vali\u00f0 gagnlegar lei\u00f0ir til \u00feess a\u00f0 skr\u00e1setja og vinna me\u00f0 g\u00f6gn,<\/li>\n\n\n\n<li>sett fram tilg\u00e1tur og alh\u00e6ft,<\/li>\n\n\n\n<li>hugsa\u00f0 um og sett fram lausn sem a\u00f0rir skilja og geta fari\u00f0 eftir.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Gl\u00f6ggir lesendur sj\u00e1 tengingu \u00feessara atri\u00f0a vi\u00f0 \u00fe\u00e1 megin\u00fe\u00e6tti reiknihugsunar sem nefndir voru fyrr \u00ed \u00feessari grein.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lokaor\u00f0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u00de\u00f3tt hugt\u00f6kin reiknihugsun og forritun hafi fyrst n\u00fa fest sig \u00ed sessi \u00ed \u00edslenskri a\u00f0aln\u00e1mskr\u00e1 \u00fe\u00e1 hafa \u00feau veri\u00f0 hluti af l\u00edfi f\u00f3lks \u00ed \u00edslensku samf\u00e9lagi um nokkurt skei\u00f0. \u00cd \u00feessari grein h\u00f6fum vi\u00f0 leitast vi\u00f0 a\u00f0 \u00fatsk\u00fdra hva\u00f0 reiknihugsun og forritun fela \u00ed s\u00e9r og \u00ed \u00feeim tilgangi r\u00e6tt um reiknirit, lykkjur, breytur og skilyr\u00f0i. Vi\u00f0 g\u00e1fum tv\u00f6 d\u00e6mi um verkefni sem eiga vi\u00f0 \u00f3l\u00edk aldursstig grunnsk\u00f3lans.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cd n\u00fat\u00edmasamf\u00e9lagi erum vi\u00f0 umkringd t\u00e6kjum sem reikna \u00ed gr\u00ed\u00f0 og erg og reiknirit st\u00fdra \u00ed auknum m\u00e6li \u00feeim uppl\u00fdsingum og fr\u00e9ttum sem okkur berast. Me\u00f0 \u00fev\u00ed a\u00f0 \u00e1tta sig betur \u00e1 gangverki reiknirita \u2013 hva\u00f0 \u00feau reikna og hvernig \u2013 er stefnt a\u00f0 \u00fev\u00ed a\u00f0 b\u00f6rn og ungmenni \u00f6\u00f0list sterkari forsendur til a\u00f0 ver\u00f0a gagnr\u00fdnir neytendur uppl\u00fdsinga og geti teki\u00f0 virkan \u00fe\u00e1tt \u00ed l\u00fd\u00f0r\u00e6\u00f0i. Reiknihugsun gegnir \u00fev\u00ed enn veigameira hlutverki en \u00e1\u00f0ur. Samf\u00e9lagi sem er annt um l\u00fd\u00f0r\u00e6\u00f0i \u00e6tti a\u00f0 vera annt um hlut reiknihugsunar \u00ed menntun barna og ungmenna.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Heimildir<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A\u00f0aln\u00e1mskr\u00e1 grunnsk\u00f3la: Almennur hluti 2011: Greinasvi\u00f0 2024.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bocconi, S., Chioccariello, A., Kampylis, P., Dagien\u0117, V., Wastiau, P., Engelhardt, K., Earp, J., Horvath, M. A., Jasut\u0117, E., Malagoli, C., Masiulionyt\u0117-Dagien\u0117, V. og Stupurien\u0117, G. (2022).&nbsp;<em>Reviewing computational thinking in compulsory education. State of play and practices in computing education<\/em>. Publications Office of the European Union.&nbsp;<a href=\"https:\/\/doi.org\/10.2760\/126955\">https:\/\/doi.org\/10.2760\/126955<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">OECD. (2022).&nbsp;<em>PISA 2022: Mathematics Framework<\/em>.&nbsp;<a href=\"https:\/\/pisa2022-maths.oecd.org\/ca\/index.html\">https:\/\/pisa2022-maths.oecd.org\/ca\/index.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Papert, S. (1980).&nbsp;<em>Mindstorms: Children, computers, and powerful ideas<\/em>. Basic Books.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wing, J. M. (2006). Computational thinking.&nbsp;<em>Communications of the ACM<\/em>,&nbsp;<em>49<\/em>(3), 33\u201335.&nbsp;<a href=\"https:\/\/doi.org\/10.1145\/1118178.1118215\">https:\/\/doi.org\/10.1145\/1118178.1118215<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:23% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"398\" height=\"584\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.26.png\" alt=\"\" class=\"wp-image-6058 size-full\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.26.png 398w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.26-204x300.png 204w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.26-300x440.png 300w\" sizes=\"auto, (max-width: 398px) 100vw, 398px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><strong>Bjarnhei\u00f0ur Kristinsd\u00f3ttir, lektor \u00ed st\u00e6r\u00f0fr\u00e6\u00f0i og st\u00e6r\u00f0fr\u00e6\u00f0imenntun vi\u00f0 Menntav\u00edsindasvi\u00f0 og Verkfr\u00e6\u00f0i- og n\u00e1tt\u00faruv\u00edsindasvi\u00f0 H\u00e1sk\u00f3la \u00cdslands.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:23% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"394\" height=\"588\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.35.png\" alt=\"\" class=\"wp-image-6059 size-full\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.35.png 394w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.35-201x300.png 201w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.35-300x448.png 300w\" sizes=\"auto, (max-width: 394px) 100vw, 394px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><strong>Freyja Hreinsd\u00f3ttir, pr\u00f3fessor \u00ed st\u00e6r\u00f0fr\u00e6\u00f0i og st\u00e6r\u00f0fr\u00e6\u00f0imenntun vi\u00f0 Menntav\u00edsindasvi\u00f0 H\u00e1sk\u00f3la \u00cdslands.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:23% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"586\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.54.png\" alt=\"\" class=\"wp-image-6061 size-full\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.54.png 400w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.54-205x300.png 205w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.14.54-300x440.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><strong><strong>Ing\u00f3lfur G\u00edslason<\/strong>, lektor \u00ed st\u00e6r\u00f0fr\u00e6\u00f0imenntun vi\u00f0 Menntav\u00edsindasvi\u00f0 H\u00e1sk\u00f3la \u00cdslands.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:23% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"390\" height=\"584\" src=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.15.12.png\" alt=\"\" class=\"wp-image-6062 size-full\" srcset=\"https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.15.12.png 390w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.15.12-200x300.png 200w, https:\/\/flatarmal.is\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-11.15.12-300x449.png 300w\" sizes=\"auto, (max-width: 390px) 100vw, 390px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><strong><strong>J\u00f3hann \u00d6rn Sigurj\u00f3nsson<\/strong>, s\u00e9rfr\u00e6\u00f0ingur \u00ed st\u00e6r\u00f0fr\u00e6\u00f0imenntun hj\u00e1 Mi\u00f0st\u00f6\u00f0 menntunar og sk\u00f3la\u00fej\u00f3nustu.\u00a0<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Greinin var \u00e1\u00f0ur birt \u00ed <em>Sk\u00f3la\u00fer\u00e1\u00f0um<\/em>, t\u00edmariti Samtaka \u00e1hugaf\u00f3lks um sk\u00f3la\u00fer\u00f3un, \u00feann 14. desember 2025: <a href=\"https:\/\/skolathraedir.is\/2025\/12\/14\/reiknirit-reiknihugsun-og-forritun-nyjar-aherslur-i-namskra\/\">https:\/\/skolathraedir.is\/2025\/12\/14\/reiknirit-reiknihugsun-og-forritun-nyjar-aherslur-i-namskra\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bjarnhei\u00f0ur Kristinsd\u00f3ttir, Freyja Hreinsd\u00f3ttir, Ing\u00f3lfur G\u00edslason og J\u00f3hann \u00d6rn Sigurj\u00f3nsson. N\u00fat\u00edmasamf\u00e9lag er undirlagt reikniritum (e. algorithms). Reiknirit er n\u00e1kv\u00e6mlega skilgreind r\u00f6\u00f0 af a\u00f0ger\u00f0um sem skila tiltekinni ni\u00f0urst\u00f6\u00f0u \u00fat fr\u00e1 gefnum forsendum. Oftast eru reiknirit ger\u00f0 til a\u00f0 leysa \u00e1kve\u00f0i\u00f0 verkefni. Hugsi\u00f0 til d\u00e6mis um hvernig \u00fei\u00f0 leggi\u00f0 saman t\u00f6lurnar 13 og 18 (e\u00f0a einhverjar a\u00f0rar&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6077,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[158,157,159,156,155,21],"class_list":["post-6042","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-adalnamskra","tag-forritun","tag-haefnividmid","tag-reiknihugsun","tag-reiknirit","tag-staerdfraedi"],"_links":{"self":[{"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/posts\/6042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flatarmal.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6042"}],"version-history":[{"count":12,"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/posts\/6042\/revisions"}],"predecessor-version":[{"id":6075,"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/posts\/6042\/revisions\/6075"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flatarmal.is\/index.php?rest_route=\/wp\/v2\/media\/6077"}],"wp:attachment":[{"href":"https:\/\/flatarmal.is\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flatarmal.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flatarmal.is\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}