diff --git a/LectureVideos.md b/LectureVideos.md
index 92d7b4e..53d275c 100644
--- a/LectureVideos.md
+++ b/LectureVideos.md
@@ -134,10 +134,11 @@ Morning: https://drive.google.com/file/d/1Jjn5w5WtK-97H7EqtXGuinJJe_RlmdiB/view?
 Morning: https://drive.google.com/file/d/1XYgVPJShS8FvuPZh2RdWDPMGUf5rmery/view?usp=sharing
 
 ### Mar 18th
-Morning: 
+Morning: https://drive.google.com/file/d/1VIg7u7JDmj5AvUFgLSARH-ryBk3Eqm8r/view
 
 ### Mar 19th
 Morning: 
 
 ### Mar 20th
-Morning: 
+First half: https://drive.google.com/file/d/1s1eNLe4ltv6khKD9HSBrSOQtiGnARiOk/view
+Second half: https://drive.google.com/file/d/1rVVm7vFGqaOD0FmfNlNfh0ErnXtr8Jpt/view