diff --git a/schedule.md b/schedule.md
index 76dcbd1..f619ac2 100644
--- a/schedule.md
+++ b/schedule.md
@@ -30,6 +30,11 @@ permalink: /schedule/
         <br />
         <a
         href="https://softwarefoundations.cis.upenn.edu/lf-current/Basics.html">Lec3 Reading</a>
+        <br />
+        <a
+        href="https://cuboulder.zoom.us/rec/share/mCa-i5Z5_ItXdG7yezyhQMpWgkkIbD_jnfxLS-xVEvsmDcjKCxK8hVXImnOwPI-v.FdHZTuyYwSyjKYKX">Lec4 Zoom Recording</a>
+        <a
+        href="https://softwarefoundations.cis.upenn.edu/lf-current/Induction.html">Lec4 Reading</a>
     </td>
   </tr>
   <tr class="lecture">