diff --git a/public/index.html b/public/index.html
index e26ecad..b60822b 100644
--- a/public/index.html
+++ b/public/index.html
@@ -12,7 +12,8 @@
         <header id="header">
             <h1>Class 3-5</h1>
             <ul>
-                <li><a href="#">학습자료 공유</a></li>
+                <li><a href="https://cloud.seung6lee.com/s/snLfTgafAKPlibE" target="_blank">학습자료 공유</a></li>
+                <li><a href="https://docs.google.com/spreadsheets/d/15WY3VpHrIYxwMOgRdskD6craRO0jGHz6Gn3oPyip0Mk/edit?usp=sharing" target="_blank">공동구매</a></li>
                 <li><a href="https://docs.google.com/spreadsheets/d/1IXVW0ynmBXuWZjJg-0-BcLfKzoo8YcAu-gI_Ou6sZwg/edit?usp=sharing" target="_blank">선생님 정보</a></li>
                 <li><a href="https://docs.google.com/spreadsheets/d/1300PFLLgnXmlk94RF5o4OqpoF_dK4XymdAHU7rsrr7c/edit?usp=sharing" target="_blank">학급비 사용</a></li>
             </ul>