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47<script src="/modules/contrib/cookies/js/cookiesjsr.conf.js?v=11.4.7" defer></script>
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48<script src="https://code.etracker.com/code/e.js" type="text/javascript" id="_etLoader" charset="UTF-8" data-block-cookies="true" data-respect-dnt="true" data-secure-code="vggzHV" async></script>
48
49
50
51<script src="/themes/mto2017/js/ruffle/ruffle.js"></script>
51
52  </head>
53  <body class="path-blog">
54        <a href="#main-content" class="visually-hidden focusable skip-link">
55      Direkt zum Inhalt
56    </a>
57    
58      <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas>
59    <div class="layout-container">
60
61  <header role="banner">
62      <div class="region region-header">
63    <nav role="navigation" aria-labelledby="block-mto-legal-quick-menu-menu" id="block-mto-legal-quick-menu" class="block block-menu navigation menu--legal-menu">
64            
65  <h2 class="visually-hidden" id="block-mto-legal-quick-menu-menu">Rechtlicher Schnellzugriff</h2>
66  
67
68        
69                <ul class="menu menu--level-1">
70                    <li class="menu-item">
71        <a href="/nutzungsbedingungen">Nutzungsbedingungen</a>
72              </li>
73                <li class="menu-item">
74        <a href="/datenschutz">Datenschutz</a>
75              </li>
76                <li class="menu-item">
77        <a href="/impressum">Impressum</a>
78              </li>
79        </ul>
80  
81
82
83  </nav>
84<div id="block-mto2017-branding" class="block block-system block-system-branding-block">
85  
86    
87      <div class="site-logo">
88    <img loading="lazy" src="/sites/default/files/logos/logo_default.svg" alt="default" title="default" />
89
90  </div>
91          <div class="site-slogan">Leichter Mathe lernen in DER Community!</div>
92  </div>
93<div id="block-hervorgehobenesformularmto-suchepage-mto-suche" class="block block-views block-views-exposed-filter-blockmto-suche-page-mto-suche">
94  
95    
96      <form class="views-exposed-form" data-drupal-selector="views-exposed-form-mto-suche-page-mto-suche" action="/search" method="get" id="views-exposed-form-mto-suche-page-mto-suche" accept-charset="UTF-8">
97  <div class="form--inline clearfix">
98  <div class="js-form-item form-item js-form-type-search-api-autocomplete form-type-search-api-autocomplete js-form-item-search-api-fulltext form-item-search-api-fulltext form-no-label">
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100
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103</div>
104
105</div>
106
107</form>
108
109  </div>
110<div id="block-socialmediablock" class="block block-block-content block-block-contentead3eebd-7c5d-4929-a28b-ae85d470b15a">
111  
112    
113      
114            <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><ul id="sm-icon-list">
115<li><a href="https://www.facebook.com/mathetreffonline" target="_blank"><i class="fab fa-facebook-square"></i></a></li>
116<li><a href="https://twitter.com/mathetreffonlin" target="_blank"><i class="fab fa-twitter-square"></i></a></li>
117<li><a href="https://www.youtube.com/user/mathetreffonline" target="_blank"><i class="fab fa-youtube-square"></i></a></li>
118<li><a href="https://www.instagram.com/mathetreffonline/" target="_blank"><i class="fab fa-instagram"></i></a></li>
119</ul>
120</div>
121      
122  </div>
123
124  </div>
125
126  </header>
127
128    <div class="region region-primary-menu">
129    <div id="block-hauptmenu" class="block block-superfish block-superfishmain">
130  
131    
132      <nav aria-label="Hauptnavigation">
133  <ul id="superfish-main" class="menu sf-menu sf-main sf-horizontal sf-style-none" role="menubar" aria-label="Menü">
134    
135
136            
137  <li id="main-menu-link-content6b3e2039-cf03-4364-afa8-bf4f16df1407" class="sf-depth-1 menuparent sf-first" role="none">
138    
139          <a href="/wissen" title="Mathe-Wissen leicht und verständlich erklärt" class="sf-depth-1 menuparent" role="menuitem" aria-haspopup="menu" aria-expanded="false">Wissen</a>
140    
141    
142    
143              <ul role="menu">
144      
145      
146
147  
148  <li id="main-menu-link-content3139121b-1db3-4f4c-99c8-cf9e5334f637" class="sf-depth-2 sf-no-children sf-first" role="none">
149    
150          <a href="/wissen/mathelexikon" class="sf-depth-2" role="menuitem">Mathelexikon</a>
151    
152    
153    
154    
155      </li>
156
157
158  
159  <li id="main-views-viewviewseinmaleins-kartenpage-1" class="sf-depth-2 sf-no-children" role="none">
160    
161          <a href="/wissen/einmaleinskarten" class="sf-depth-2" role="menuitem">Einmaleins-Karten</a>
162    
163    
164    
165    
166      </li>
167
168
169  
170  <li id="main-views-viewviewskarteikartenpage-1" class="sf-depth-2 sf-no-children sf-last" role="none">
171    
172          <a href="/wissen/karteikarten" class="sf-depth-2" role="menuitem">Karteikarten</a>
173    
174    
175    
176    
177      </li>
178
179
180
181              </ul>
182      
183    
184    
185      </li>
186
187
188            
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190    
191          <a href="/action" class="sf-depth-1 menuparent" role="menuitem" aria-haspopup="menu" aria-expanded="false">Action</a>
192    
193    
194    
195              <ul role="menu">
196      
197      
198
199  
200  <li id="main-menu-link-content19e17f57-e393-4b3c-acad-c41796c7fd8a" class="sf-depth-2 sf-no-children sf-first" role="none">
201    
202          <a href="/action/konstruktionen" class="sf-depth-2" role="menuitem">Konstruktionen</a>
203    
204    
205    
206    
207      </li>
208
209
210  
211  <li id="main-menu-link-content406bebb2-f429-4e59-aeaf-6468b2d3eae1" class="sf-depth-2 sf-no-children" role="none">
212    
213          <a href="/action/mathe-interaktiv" class="sf-depth-2" role="menuitem">Mathe interaktiv</a>
214    
215    
216    
217    
218      </li>
219
220
221  
222  <li id="main-menu-link-content45a3405d-80d0-4421-b922-1d7a9a5276cc" class="sf-depth-2 sf-no-children" role="none">
223    
224          <a href="/action/uebungsaufgaben" class="sf-depth-2" role="menuitem">Übungsaufgaben</a>
225    
226    
227    
228    
229      </li>
230
231
232  
233  <li id="main-menu-link-contentf97f53f2-1672-43eb-b8d7-afeeef699aa9" class="sf-depth-2 sf-no-children sf-last" role="none">
234    
235          <a href="/action/wir-lernen" class="sf-depth-2" role="menuitem">Wir lernen</a>
236    
237    
238    
239    
240      </li>
241
242
243
244              </ul>
245      
246    
247    
248      </li>
249
250
251            
252  <li id="main-menu-link-content86639558-6d96-4a63-a544-260f14bce20d" class="sf-depth-1 menuparent" role="none">
253    
254          <a href="/fun" class="sf-depth-1 menuparent" role="menuitem" aria-haspopup="menu" aria-expanded="false">Fun</a>
255    
256    
257    
258              <ul role="menu">
259      
260      
261
262  
263  <li id="main-menu-link-contentc09046b2-d028-414b-95bc-0efb099cdea0" class="sf-depth-2 sf-no-children sf-first" role="none">
264    
265          <a href="/fun/bastelecke" class="sf-depth-2" role="menuitem">Bastelecke</a>
266    
267    
268    
269    
270      </li>
271
272
273  
274  <li id="main-views-viewviewsmatheraetselpage-1" class="sf-depth-2 sf-no-children" role="none">
275    
276          <a href="/fun/matheraetsel" class="sf-depth-2" role="menuitem">Matherätsel</a>
277    
278    
279    
280    
281      </li>
282
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479    <span class="views-field views-field-created"><span class="field-content"><time datetime="2020-04-15T18:04:00+02:00" class="datetime">15. April 2020</time>
480</span></span> | <span class="views-field views-field-uid"><span class="field-content">Chris</span></span> | <span class="views-field views-field-title"><span class="field-content"><a href="/blog/2020/04/15/buchreihe-zur-website-erweitert" hreflang="de">Buchreihe zur Website erweitert!</a></span></span><div class="views-field views-field-body"><span class="field-content">Hallo zusammen!
481Das mathetreff-online-Team hat die Buchreihe zur Website um den achten Titel "Flächeneinheiten - Einfach erklärt" erweitert. Das Buch… <a href="https://www.mathetreff-online.de/blog/2020/04/15/buchreihe-zur-website-erweitert" class="views-more-link">mehr</a></span></div>
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485</span></span> | <span class="views-field views-field-uid"><span class="field-content">Chris</span></span> | <span class="views-field views-field-title"><span class="field-content"><a href="/blog/2020/03/14/pi-tag" hreflang="de">Pi-Tag</a></span></span><div class="views-field views-field-body"><span class="field-content">Heute, am 14. März, ist der Pi-Tag (englisch Pi Day), ein inoffizieller Feiertag zu Ehren der Kreiszahl Pi (π). Er geht zurück auf die US… <a href="https://www.mathetreff-online.de/blog/2020/03/14/pi-tag" class="views-more-link">mehr</a></span></div>
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489</span></span> | <span class="views-field views-field-uid"><span class="field-content">Chris</span></span> | <span class="views-field views-field-title"><span class="field-content"><a href="/blog/2020/03/05/buchreihe-zur-website-erweitert" hreflang="de">Buchreihe zur Website erweitert!</a></span></span><div class="views-field views-field-body"><span class="field-content">Hallo zusammen!
490Das mathetreff-online-Team hat die Buchreihe zur Website um den siebten Titel "Winkel - Einfach erklärt" erweitert. Das Buch ist ab… <a href="https://www.mathetreff-online.de/blog/2020/03/05/buchreihe-zur-website-erweitert" class="views-more-link">mehr</a></span></div>
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493    <span class="views-field views-field-created"><span class="field-content"><time datetime="2020-02-02T00:00:00+01:00" class="datetime">02. Februar 2020</time>
494</span></span> | <span class="views-field views-field-uid"><span class="field-content">Chris</span></span> | <span class="views-field views-field-title"><span class="field-content"><a href="/blog/2020/02/02/der-2-februar-2020-ein-besonderer-tag" hreflang="de">Der 2. Februar 2020 - ein besonderer Tag!</a></span></span><div class="views-field views-field-body"><span class="field-content">Heute ist der 2. Februar 2020. Dieser Tag ist ein besonderer Tag. Warum? Denn das letzte Mal gab es einen solchen Tag vor über 900 Jahren, und erst… <a href="https://www.mathetreff-online.de/blog/2020/02/02/der-2-februar-2020-ein-besonderer-tag" class="views-more-link">mehr</a></span></div>
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