Update Lecture4.md

benpaddlejones · web-flow · commit b3953e36bfaf · 2025-06-18T20:14:31.000+10:00
diff --git a/tutorials/Lecture4.md b/tutorials/Lecture4.md
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 # Lecture 4
 
+https://github.com/user-attachments/assets/176a9284-4b8a-41f5-bac0-39ae93500244
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 ## Lecture 4 Concepts
 
 - [Pedestrian_Button Class](#pedestrian_button-class)
