Kuzle, A., Pavlekovic M., Kolar-Begovic Z.., & Kolar-Super R..  (2013).  The interrelations of the cognitive, and metacognitive factors with the affective factors during problem solving.  Mathematics teaching for the future .  250?260.

Kortenkamp, U.  (2012).  Interaktives Whiteboard, iPad & Co. ? das Klassenzimmer der Zukunft.   

Kuzle, A.  (2012).  Investigating and communicating technology mathematics problem solving experience of two preservice teachers.  Acta Didactica Napocensia. 5(1), 1?10.

Trgalova, J., Kortenkamp U., Jahn A P., Libbrecht P., Mercat C., Recio T., et al.  (2011).  I2Geo.net ? a platform for sharing dynamic geometry resources all over Europe.   

Ladel, S., & Kortenkamp U.  (2011).  Implementation of a multi-touch-environment supporting finger symbol sets.  Proceedings of CERME 7, Rzeszow.  

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U., & Laborde C.  (2011).  Interoperable Interactive Geometry for Europe: an introduction.  ZDM ? The International Journal on Mathematics Education.  1-3.

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Libbrecht, P., Kortenkamp U., & Mercat C.  (2009).  I2Geo: a Web-Library of Interactive Geometry.  (Sojka, P., Ed.).Proceedings of the 2nd Workshop Towards a Digital Mathematics Library (DML-2009).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

[Gast]  (2008).  Informatische Ideen im Mathematikunterricht. Bericht über die 23. Arbeitstagung des Arbeitskreises Mathematikunterricht und Informatik.  (Kortenkamp, U., Weigand H-G., & Weth T., Ed.). 

Kortenkamp, U., & Kreis Y.  (2008).  Intergeo ? Interoperable Interactive Geometry for Europe.  Beiträge zum Mathematikunterricht. Vorträge auf der 42. Tagung für Didaktik der Mathematik in Budapest.  

Kortenkamp, U., & Kreis Y.  (2008).  Intergeo ? Interoperable Interactive Geometry for Europe.  Beiträge zum Mathematikunterricht. Vorträge auf der 42. Tagung für Didaktik der Mathematik in Budapest.  

Müller, W., Bescherer C., Kortenkamp U., & Spannagel C.  (2006).  Intelligent Computer-aided Assessment in the Math Classroom: State-of-the-art and Perspectives.  Proceedings of the IFIP WG 3.1, 3.3, & 3.5 Joint Conference Imagining the future for ICT and Education, Alesund, Norway.  

Kortenkamp, U.  (2000).  Internetfähige Software fürs Lernen im 21. Jahrhundert.  FU-Nachrichten. 6, 

Richter-Gebert, J., & Kortenkamp U. H.  (1999).  The Interactive Geometry Software Cinderella.   

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"  "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"><html><head>    <meta http-equiv="content-type" content="text/html; charset=utf-8" />    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="Generator" content="Drupal 7 (http://drupal.org)" /><link rel="shortcut icon" href="https://cermat.org/sites/default/files/CERMAT-Logo_cindy_3.png" type="image/png" />    <title>Error | CERMAT</title>        <style type="text/css" media="all">@import url("https://cermat.org/modules/system/system.base.css?t2075l");@import url("https://cermat.org/modules/system/system.menus.css?t2075l");@import url("https://cermat.org/modules/system/system.messages.css?t2075l");@import url("https://cermat.org/modules/system/system.theme.css?t2075l");</style><style type="text/css" media="all">@import url("https://cermat.org/modules/field/theme/field.css?t2075l");@import url("https://cermat.org/modules/node/node.css?t2075l");@import url("https://cermat.org/modules/search/search.css?t2075l");@import url("https://cermat.org/modules/user/user.css?t2075l");@import url("https://cermat.org/sites/all/modules/views/css/views.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/sliders/nivo/themes/bar/bar.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/sliders/nivo/nivo-slider.css?t2075l");</style><style type="text/css" media="all">@import url("https://cermat.org/sites/all/modules/ctools/css/ctools.css?t2075l");@import url("https://cermat.org/sites/all/modules/biblio/biblio.css?t2075l");</style><style type="text/css" media="all">@import url("https://cermat.org/sites/all/themes/icompany/css/bootstrap.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/css/superfish.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/style.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/customize_icompany.css?t2075l");@import url("https://cermat.org/sites/all/themes/icompany/css/colorbox.css?t2075l");</style>    <!-- GOOGLE FONTS CSS -->         <link href='http://fonts.googleapis.com/css?family=Lato:100,200,300,400,500,600,700,subset=latin:n,i,b,bi|Lato:100,200,300,400,500,600,700,subset=latin:n,i,b,bi|PT+Sans:100,200,300,400,500,600,700,subset=latin:n,i,b,bi|Lato:100,200,300,400,500,600,700,subset=latin:n,i,b,bi|Lato' rel='stylesheet' type='text/css'/>                 <style type="text/css">    		body.icompany, #wap-menu ul.sf-menu li span.tip a, .ei-title h3, #main_slider .slider-body, #main_slider .slider-link, .btn		font-family: PT Sans, 'Helvetica Neue', Helvetica, Arial, sans-serif;		font-weight: normal;			h1, h2, h3, h4, h5, h6, h7, h8, .heading,  .nav-tabs, .pricing-table ul .price, .accordion-heading, .numbered-heading, .heading-list, .uc-price 		font-family: Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif;		font-weight: 300;			#wap-menu ul.sf-menu li a, .tinynav		font-family: Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif;		font-weight: 300;			#main_slider, #main_slider h1, #main_slider h2, #main_slider h3, #main_slider p, #main_slider .btn		font-family: Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif;		font-weight: 300;			blockquote, .quote		font-family: Lato, Georgia,"Times New Roman",Times,serif;		font-weight: 300;			        /* Body background scheme goes here -----------*/        body    	background: url(/sites/all/themes/icompany/img/bg/stripe_default.png) repeat;                /** custom typo */   	body   		font-size: 13px;   		   	  	    .sf-menu a    	font-size: 18px    		        /* Theme color scheme goes here ----------- */       a, a:hover, .color:hover, ul.menu li a:hover , #footer-bar a:hover, #footer-region a, .btn.btn-plain    		color: #0F9417 ;   		text-decoration: none;                .color, .dropcap   		color: #0F9417 ;   		text-decoration: none;            #header_left .inner    	margin-top: 35px;            .main_menu_container    	margin-top: 60px;            	@media screen and (max-width: 767px)		 .main_menu_container		 	margin-top: 25px;		 	       .theme-scheme, .btn.btn-theme, .btn-theme:focus,     .btn-theme:active,  .btn.btn-theme:hover,     .comment .new, .marker,  #title-region .inner,  .dropdown-menu .active > a,     .dropdown-menu .active > a:hover,     .dropdown-menu li > a:hover,	.dropdown-menu li > a:focus,	.dropdown-submenu:hover > a, 	.jcarousel-next-vertical, .jcarousel-prev-vertical, 	#highlighted_2, .round-number, .btn.btn-plain, #bottom-region, .btn.node-add-to-cart, 	.btn.node-add-to-cart:hover, .node-product .product-title   		background-color: #0F9417  ;            #bottom-region, .node-product .product-images .field-type-image     	border-color: #4baf51 ;            .product-title-border    	background: #6fbf74 ;             #bottom-region a    	color: #9fd4a2         .theme-border, .sf-menu li.sfHover ul, #page-wrapper,  th, #forum .table th, .border-color, .banner, #footer-bar     		border-color: #0F9417 ;			.region-highlighted-2, #bottomShadow		border-color: #4baf51			#tabs-region .tab-content		border-left:2px solid #0F9417;			#tabs-region .tabs-left > .nav-tabs > li.active		border-top:1px solid #0e8515;		border-left:1px solid #0e8515;		border-bottom:1px solid #0e8515;			#tabs-region .tabs-left > .nav-tabs > li.active > a, #tabs-region .tabs-left > .nav-tabs > li.active > a:hover 				border-top:1px solid #8ccc90;		border-left:1px solid #8ccc90;		border-bottom:1px solid #8ccc90;				border-right:none;		background: #0F9417; /* Old browsers */		/* IE9 SVG, needs conditional override of 'filter' to 'none' */		background: url(data:image/svg+xml;base64,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);		background: -moz-linear-gradient(top,  #4baf51 0%, #0F9417 75%); /* FF3.6+ */		background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#4baf51), color-stop(75%,#0F9417)); /* Chrome,Safari4+ */		background: -webkit-linear-gradient(top,  #4baf51 0%,#0F9417 75%); /* Chrome10+,Safari5.1+ */		background: -o-linear-gradient(top,  #4baf51 0%,#0F9417 75%); /* Opera 11.10+ */		background: -ms-linear-gradient(top,  #4baf51 0%,#0F9417 75%); /* IE10+ */		background: linear-gradient(to bottom,  #4baf51 0%,#0F9417 75%); /* W3C */		filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#000000',GradientType=0 ); /* IE6-8 */			.shadow-transition:hover, .btn-theme:hover,   .btn.node-add-to-cart:hover	  -webkit-box-shadow: 0px 0px 9px rgba(15,148,23, 0.8);	  -moz-box-shadow:    0px 0px 9px rgba(15,148,23, 0.8);	  box-shadow:         0px 0px 9px rgba(15,148,23, 0.8);	        #topBar .dark-bg    	background: #;            /*bootstrap line 1194 */	textarea:focus,	input[type="text"]:focus,	input[type="password"]:focus,	input[type="datetime"]:focus,	input[type="datetime-local"]:focus,	input[type="date"]:focus,	input[type="month"]:focus,	input[type="time"]:focus,	input[type="week"]:focus,	input[type="number"]:focus,	input[type="email"]:focus,	input[type="url"]:focus,	input[type="search"]:focus,	input[type="tel"]:focus,	input[type="color"]:focus,	.uneditable-input:focus 	  border-color: rgba(15,148,23, 0.8);	  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(15,148,23, 0.6);	  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(15,148,23, 0.6);	  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(15,148,23, 0.6);			.bar .foreground, .node-product .product-title		background: #0F9417; /* Old browsers */		/* IE9 SVG, needs conditional override of 'filter' to 'none' */		background: url(data:image/svg+xml;base64,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);		background: -moz-linear-gradient(top,  #6fbf74 0%, #0F9417 100%); /* FF3.6+ */		background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#4baf51), color-stop(100%,#0F9417)); /* Chrome,Safari4+ */		background: -webkit-linear-gradient(top,  #6fbf74 0%,#0F9417 100%); /* Chrome10+,Safari5.1+ */		background: -o-linear-gradient(top,  #6fbf74 0%,#0F9417 100%); /* Opera 11.10+ */		background: -ms-linear-gradient(top,  #6fbf74 0%,#0F9417 100%); /* IE10+ */		background: linear-gradient(to bottom,  #6fbf74 0%,#0F9417 100%); /* W3C */		filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#6fbf74', endColorstr='#0F9417',GradientType=0 ); /* IE6-8 */			#feedback-link:hover		background: #0F9417; 			.poll .bar		box-shadow: 0 1px 2px rgba(100,100,100,.2) inset;		background: #eee;			 	#footer-region a, #footer-region a:visited		color:  #54773C;				#footer-region .btn-theme, #footer-region .btn-theme:visited    	color: #fff;            </style>     <script type="text/javascript" src="https://cermat.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4"></script><script type="text/javascript" src="https://cermat.org/misc/jquery-extend-3.4.0.js?v=1.12.4"></script><script type="text/javascript" src="https://cermat.org/misc/jquery-html-prefilter-3.5.0-backport.js?v=1.12.4"></script><script type="text/javascript" src="https://cermat.org/misc/jquery.once.js?v=1.2"></script><script type="text/javascript" src="https://cermat.org/misc/drupal.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/modules/jquery_update/js/jquery_browser.js?v=0.0.1"></script><script type="text/javascript"><!--//--><![CDATA[//><!--	(function ($) 	   $(window).load(function()   $('#slider').nivoSlider(effect: 'random', slices: 15, boxCols: 6, boxRows: 4, pauseTime: 5000, animSpeed: 500,  ););	)(jQuery);	//--><!]]></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/js/scripts.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/js/hoverIntent.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/sliders/nivo/jquery.nivo.slider.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/js/superfish.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/js/selectnav.min.js?t2075l"></script><script type="text/javascript" src="https://cermat.org/sites/all/themes/icompany/js/jquery.colorbox-min.js?t2075l"></script><script type="text/javascript"><!--//--><![CDATA[//><!--jQuery.extend(Drupal.settings, "basePath":"","pathPrefix":"","setHasJsCookie":0,"ajaxPageState":"theme":"icompany","theme_token":"0CxhikD3zXir-Rruj_VSiHhkW0wj4Px-Cw5mMl3MTjE","css":"modulessystemsystem.base.css":1,"modulessystemsystem.menus.css":1,"modulessystemsystem.messages.css":1,"modulessystemsystem.theme.css":1,"modulesfieldthemefield.css":1,"modulesnodenode.css":1,"modulessearchsearch.css":1,"modulesuseruser.css":1,"sitesallmodulesviewscssviews.css":1,"sitesallthemesicompanyslidersnivothemesbarbar.css":1,"sitesallthemesicompanyslidersnivonivo-slider.css":1,"sitesallmodulesctoolscssctools.css":1,"sitesallmodulesbibliobiblio.css":1,"sitesallthemesicompanycssbootstrap.css":1,"sitesallthemesicompanycsssuperfish.css":1,"sitesallthemesicompanystyle.css":1,"sitesallthemesicompanycustomize_icompany.css":1,"sitesallthemesicompanycsscolorbox.css":1,"js":"sitesallmodulesjquery_updatereplacejquery1.12jquery.min.js":1,"miscjquery-extend-3.4.0.js":1,"miscjquery-html-prefilter-3.5.0-backport.js":1,"miscjquery.once.js":1,"miscdrupal.js":1,"sitesallmodulesjquery_updatejsjquery_browser.js":1,"0":1,"sitesallthemesicompanyjsscripts.js":1,"sitesallthemesicompanyjshoverIntent.js":1,"sitesallthemesicompanyslidersnivojquery.nivo.slider.js":1,"sitesallthemesicompanyjssuperfish.js":1,"sitesallthemesicompanyjsselectnav.min.js":1,"sitesallthemesicompanyjsjquery.colorbox-min.js":1,"jcarousel":"ajaxPath":"jcarouselajaxviews");//--><!]]></script></head><body class="maintenance-page in-maintenance no-sidebars "  >    <div id="bodyinner" class="container">	<div id="structure" class="row">	   <div style="font-size:18px; margin-top:150px; display:block;" class="  offset1"> 	   	<img class="pull-left" style="margin-right: 10px;" src="/sites/all/themes/icompany/img/maintenance.png" alt="" />	   		   		<h2>Error</h2>	   		The website encountered an unexpected error. Please try again later.	   </div>	</div>   </div>          </body></html>