diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
index ebee7f781..b77389c46 100644
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
@@ -146,7 +146,9 @@ side* of the mirror.<br><br>
 
 ##### Examples of graphical situations, with analytical results to train
 
-![Click here for geogebra animation](https://www.geogebra.org/m/jwgy9q7z)
+[Click here for geogebra animation](https://www.geogebra.org/m/jwgy9q7z)
+
+[Click here for geogebra animation](https://www.geogebra.org/material/iframe/id/zqwazusz)
 
 * with **real objects**