diff --git a/_assets/teaching-resources/open-teaching-graphics/EEG_analysis.png b/_assets/teaching-resources/open-teaching-graphics/EEG_analysis.png
index 02463db7..fa55abaa 100644
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diff --git a/_layout/nav.html b/_layout/nav.html
index 8d0742b2..22560fc6 100644
--- a/_layout/nav.html
+++ b/_layout/nav.html
@@ -30,29 +30,7 @@
 							<li><a href="/teaching-resources/interactive-explanations/">Interactive Explanations</a></li>
 							<li><a href="/teaching-resources/linear-mixed-models/">Linear Mixed Models</a></li>
 							<li><a href="/teaching-resources/philosophy-of-science/">Philosophy Of Science</a></li>
-							<li><a href="/teaching-resources/open-teaching-graphics">Open Teaching Graphics</a>
-								<ul class="nav-third">
-									<li><a href="/teaching-resources/open-teaching-graphics/Bold-Response-Sampling/">Bold Response Sampling</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Correspondence-Problem/">Correspondence Problem</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Distance-Measures/">Distance Measures</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/EEG-Analysis/">Eeg Analysis</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/ERP-Single-Trial/">Erp Single Trial</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/ERPs/">Erps</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Eye-Venes/">Eye Venes</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Figure-Disparity-Receptive-Fields/">Figure Disparity Receptive Fields</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Induced-Evoked/">Induced Evoked</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Interaction-Effect-Coding/">Interaction Effect Coding</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Monitor-Receptive-Field/">Monitor Receptive Field</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Multi-Taper-Vs-FFT/">Multi Taper Vs Fft</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Plane-Basis-Vectors/">Plane Basis Vectors</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Poster-Template/">Poster Template</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Power-Spectral-Bands/">Power Spectral Bands</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Purkinje-Blue-Arc/">Purkinje Blue Arc</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Simulated-Signal/">Simulated Signal</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Temporal-Spatial-Tradeoff/">Temporal Spatial Tradeoff</a></li>
-									<li><a href="/teaching-resources/open-teaching-graphics/Wavelet-Transform/">Wavelet Transform</a></li>
-								</ul>
-							</li>
+							<li><a href="https://www.oerbw.de/edu-sharing/components/collections?locale=de&id=871d4518-86b6-4916-9d45-1886b6091621&scope=TYPE_EDITORIAL">Open Teaching Graphics</a></li>
 							<li><a href="/teaching-resources/vision-demos/">Vision Demos</a></li>
 						</ul>
 					</li>
diff --git a/teaching-resources/open-teaching-graphics/index.md b/teaching-resources/open-teaching-graphics/index.md
index 1d378255..48bccae7 100644
--- a/teaching-resources/open-teaching-graphics/index.md
+++ b/teaching-resources/open-teaching-graphics/index.md
@@ -1,9 +1,6 @@
 @def title = "Open Teaching Graphics" 
 @def tags = ["toc"] 
 
-# Open Teaching Graphics 
-
-These are vector graphics relating to EEG/fMRI/cognitive research and are free to use under CC-By license. 
-
-
+# Open Teaching Graphics
+ These are vector graphics relating to EEG/fMRI/cognitive research and are free to use under CC-By license.