{"id":102,"date":"2024-04-27T20:15:34","date_gmt":"2024-04-27T20:15:34","guid":{"rendered":"https:\/\/urff.app\/?page_id=102"},"modified":"2024-04-27T20:15:47","modified_gmt":"2024-04-27T20:15:47","slug":"rechendreieck","status":"publish","type":"page","link":"https:\/\/urff.app\/en\/rechendreieck\/","title":{"rendered":"arithmetic triangle"},"content":{"rendered":"<h3 class=\"wp-block-heading\"><strong>\u2013 discover the exercise format interactively and experiment with it.<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/itunes.apple.com\/us\/app\/rechendreieck\/id575736731?l=de&amp;ls=1&amp;mt=8\" target=\"_blank\" rel=\"noreferrer noopener\">interactive math triangle<\/a>&nbsp;(for iOS) is a virtual tool that can be used to illustrate and explore problems involving arithmetic triangles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><!-- WP-Appbox (Version: 4.5.13 \/\/ Store: appstore \/\/ ID: 575736731) -->\n<div class=\"wpappbox wpappbox-c988b7ee70b7c685acea59d91f090170 appstore simple\">\n\t<div class=\"qrcode\"><img decoding=\"async\" src=\"https:\/\/api.qrserver.com\/v1\/create-qr-code\/?data=https%3A%2F%2Fapps.apple.com%2Fde%2Fapp%2Frechendreieck%2Fid575736731&size=200x200&ecc=M&margin=0\" alt=\"Rechendreieck\" \/><\/div>\n\t<div class=\"appicon\">\n\t\t<a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/apps.apple.com\/de\/app\/rechendreieck\/id575736731\" aria-label=\"arithmetic triangle\"><img decoding=\"async\" src=\"\/\/is1-ssl.mzstatic.com\/image\/thumb\/Purple127\/v4\/56\/33\/13\/56331385-16b2-8c36-3014-b419380506d6\/mzl.mzgpkhad.png\/200x200ia-75.png\" alt=\"Rechendreieck\" \/><\/a>\n\t<\/div>\n\t<div class=\"applinks\">\n\t\t<div class=\"appbuttons\">\n\t\t\t<a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/apps.apple.com\/de\/app\/rechendreieck\/id575736731\" aria-label=\"arithmetic triangle\">Download<\/a>\n\t\t\t<span onmouseover=\"jQuery('.wpappbox-c988b7ee70b7c685acea59d91f090170 .qrcode').show();\" onmouseout=\"jQuery('.wpappbox-c988b7ee70b7c685acea59d91f090170 .qrcode').hide();\">QR code<\/span>\n\t\t<\/div>\n\t<\/div>\n\t<div class=\"appdetails\">\n\t\t<div class=\"apptitle\"><a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/apps.apple.com\/de\/app\/rechendreieck\/id575736731\" title=\"arithmetic triangle\" aria-label=\"arithmetic triangle\" class=\"apptitle\">arithmetic triangle<\/a><\/div>\n\t\t<div class=\"developer\">\n\t\t\t<span class=\"label\">Developers: <\/span>\n\t\t\t<span class=\"value\"><a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/apps.apple.com\/de\/developer\/christian-urff\/id415894463\">Christian Urff<\/a><\/span>\n\t\t<\/div>\n\t\t<div class=\"price\">\n\t\t\t<span class=\"label\">Price: <\/span>\n\t\t\t<span class=\"value\">1,99\u00a0\u20ac<\/span> \n\t\t\t<span class=\"rating\"><div title=\"3.5 of 5 stars\" class=\"rating-stars stars-monochrome stars35\"><\/div><\/span>\n\t\t<\/div>\n\t<\/div>\n<\/div><!-- \/WP-Appbox --><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><iframe loading=\"lazy\" title=\"Calculation Triangle App\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/iN3b20F6UC8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Description of the app<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Calculation triangles encourage flexible thinking and calculation. With this calculation triangle you can solve tasks with calculation triangles - as offered in many exercise books and math textbooks - interactively by trying things out. This is how it works:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Place tiles by touching the triangle with one or more fingers.<\/li>\n\n\n\n<li>Move tiles from one space to another by touching and dragging them.<\/li>\n\n\n\n<li>Delete a tile by dragging it out of the calculation triangle.<\/li>\n\n\n\n<li>Cover a field by closing the shutter.<\/li>\n\n\n\n<li>If you cross out a number, you can hide and show it again.<\/li>\n\n\n\n<li>Shake the math triangle to clear all tiles.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Arithmetic triangles are designed for the concept of productive practice. Arithmetic triangles can be used to work on problem-structured exercises, for example the following tasks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Find the missing numbers?<\/li>\n\n\n\n<li>Find out how many tiles are in the covered field?<\/li>\n\n\n\n<li>How do the marginal numbers change if\u2026<br>\u2026 one (2, 3, \u2026) tile is added\/removed in each field?<br>\u2026 when one (two, three, \u2026) tile is moved from one field to another.<br>\u2026 one (two, three, \u2026) tile can be added\/removed in two fields?<\/li>\n\n\n\n<li>Can all three marginal numbers be odd?<\/li>\n\n\n\n<li>What is the relationship between the sum of the edge numbers and the number of tiles placed? Can you &quot;create&quot; any three edge numbers or are there restrictions?<\/li>\n\n\n\n<li>Invent your own tasks using the arithmetic triangle and give them to a learning partner.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Browser and offline version<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There is also a&nbsp;<a href=\"http:\/\/www.lernsoftware-mathematik.de\/prototypen\/Rechendreieck.html\" target=\"_blank\" rel=\"noreferrer noopener\">Browser version<\/a>, as well as offline versions for&nbsp;<a href=\"http:\/\/www.lernsoftware-mathematik.de\/prototypen\/Rechendreieck.zip\" target=\"_blank\" rel=\"noreferrer noopener\">Mac<\/a>&nbsp;and&nbsp;<a href=\"http:\/\/www.lernsoftware-mathematik.de\/prototypen\/Rechendreieck.exe\" target=\"_blank\" rel=\"noreferrer noopener\">Windows<\/a>Unfortunately, they only work with a functioning Flash plugin.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u2013 das \u00dcbungsformat interaktiv entdecken und damit experimentieren. Das&nbsp;interaktive Rechendreieck&nbsp;(f\u00fcr iOS)&nbsp;ist ein virtuelles Arbeitsmittel, mit dessen Hilfe Problemstellungen mit Rechendreiecken veranschaulicht und erkundet werden k\u00f6nnen. Beschreibung der App Rechendreiecke f\u00f6rdern das flexible Denken und Rechnen. Mit diesem Rechendreieckkannst du Aufgaben mit Rechendreiecken \u2013 wie sie in vielen \u00dcbungsheften und Mathematiklehrwerken angeboten werden \u2013 interaktiv durch [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-102","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/pages\/102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/comments?post=102"}],"version-history":[{"count":2,"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/pages\/102\/revisions"}],"predecessor-version":[{"id":105,"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/pages\/102\/revisions\/105"}],"wp:attachment":[{"href":"https:\/\/urff.app\/en\/wp-json\/wp\/v2\/media?parent=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}