diff --git a/src/teaching/cse-562/2017sp/index.erb b/src/teaching/cse-562/2017sp/index.erb
index ee2eeb09..808c4a3c 100644
--- a/src/teaching/cse-562/2017sp/index.erb
+++ b/src/teaching/cse-562/2017sp/index.erb
@@ -54,11 +54,13 @@ classContent:
     meta:
       notes: slides/2017-02-28-RelationalAlgebra.pdf
       board: slides/2017-02-28-Board.pdf
+      video: https://youtu.be/GTqq62Q5Nvg
   - date: Mar. 2
     topic: Optimization
     meta: 
       notes: slides/2017-03-02-Optimization1.pdf
       board: slides/2017-03-02-Board.pdf
+      video: https://youtu.be/1JDDS_bQr6M
   - date: Mar. 7
     topic: Database Statistics
   - date: Mar. 9