{"id":74366,"date":"2021-10-16T19:12:27","date_gmt":"2021-10-16T16:12:27","guid":{"rendered":"https:\/\/azbuki.bg\/?p=74366"},"modified":"2025-07-07T11:56:03","modified_gmt":"2025-07-07T08:56:03","slug":"challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament","status":"publish","type":"post","link":"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/","title":{"rendered":"Challenging the Students\u2018 Sense of Mathematics Via Decoding Problems in Chernorizec Hrabar Tournament"},"content":{"rendered":"<p><strong>Borislav Lazarov, Ivailo Kortezov<\/strong><br \/>\n<em>Bulgarian Academy of Sciences \u2013 Sofia (Bulgaria)<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/math2021-3-3-cha\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/math2021-3-3-cha<\/a><\/p>\n<p><strong>Abstract.<\/strong> Under consideration is a thematic branch from the Chernorizec Hrabar (ChH) math tournament, which aims to check and develop the student\u2019s sense of mathematics. The ChH competition papers include several types of test items related to codes. These test items require just basic math knowledge but a high level of nonstandard reasoning and a kind of synthetic mathematical abilities. The authors\u2019 standing point is to present by examples how the idea of (de)coding evolves in competition papers for students in different ages.<br \/>\n<em>Keywords:<\/em> mathematic competitions; sense of mathematics; (de)coding problems; synthetic competence; gifted education<\/p>\n<a href=\"https:\/\/bel.azbuki.bg\/en\/member-login\/\">Log in to read the full text<\/a>","protected":false},"excerpt":{"rendered":"<p>Borislav Lazarov, Ivailo Kortezov Bulgarian Academy of Sciences \u2013 Sofia (Bulgaria) https:\/\/doi.org\/10.53656\/math2021-3-3-cha Abstract. Under consideration is a thematic branch from the Chernorizec Hrabar (ChH) math tournament, which aims to check and develop the student\u2019s sense of mathematics. The ChH competition papers include several types of test items related to codes. These test items require just [&hellip;]<\/p>","protected":false},"author":124332423426818,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":{"subtitle":"","format":"standard","video":"","gallery":"","source_name":"","source_url":"","via_name":"","via_url":"","override_template":"0","override":[{"single_blog_custom":"","parallax":"0","fullscreen":"0","sidebar":"","second_sidebar":"","sticky_sidebar":"0","share_position":"","share_float_style":"","show_share_counter":"0","show_view_counter":"0","show_featured":"0","show_post_meta":"0","show_post_author":"0","show_post_author_image":"0","show_post_date":"0","post_date_format":"","post_date_format_custom":"","show_post_category":"0","show_post_reading_time":"0","post_reading_time_wpm":"","show_post_tag":"0","show_prev_next_post":"0","show_popup_post":"0","number_popup_post":"1","show_author_box":"0","show_post_related":"0","show_inline_post_related":"0"}],"override_image_size":"0","image_override":[{"single_post_thumbnail_size":"","single_post_gallery_size":""}],"trending_post":"0","trending_post_position":"","trending_post_label":""},"jnews_primary_category":{"id":""}},"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Challenging the Students\u2018 Sense of Mathematics Via Decoding Problems in Chernorizec Hrabar Tournament - \u0410\u0437-\u0431\u0443\u043a\u0438<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Challenging the Students\u2018 Sense of Mathematics Via Decoding Problems in Chernorizec Hrabar Tournament - \u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"og:description\" content=\"Borislav Lazarov, Ivailo Kortezov Bulgarian Academy of Sciences \u2013 Sofia (Bulgaria) https:\/\/doi.org\/10.53656\/math2021-3-3-cha Abstract. Under consideration is a thematic branch from the Chernorizec Hrabar (ChH) math tournament, which aims to check and develop the student\u2019s sense of mathematics. The ChH competition papers include several types of test items related to codes. These test items require just [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\" \/>\n<meta property=\"og:site_name\" content=\"\u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Azbuki55\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-10-16T16:12:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-07T08:56:03+00:00\" \/>\n<meta name=\"author\" content=\"v.genkov@azbuki.bg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"v.genkov@azbuki.bg\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\"},\"author\":{\"name\":\"v.genkov@azbuki.bg\",\"@id\":\"https:\/\/bel.azbuki.bg\/en\/#\/schema\/person\/92cc38d6a11fb032bf6299efd22a71c5\"},\"headline\":\"Challenging the Students\u2018 Sense of Mathematics Via Decoding Problems in Chernorizec Hrabar Tournament\",\"datePublished\":\"2021-10-16T16:12:27+00:00\",\"dateModified\":\"2025-07-07T08:56:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\"},\"wordCount\":155,\"publisher\":{\"@id\":\"https:\/\/bel.azbuki.bg\/en\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\",\"url\":\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/challenging-the-students-sense-of-mathematics-via-decoding-problems-in-chernorizec-hrabar-tournament\/\",\"name\":\"Challenging the Students\u2018 Sense of Mathematics Via Decoding Problems in Chernorizec Hrabar Tournament - 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