diff --git a/public/index.html b/public/index.html
index 400c454..a7a9ab3 100644
--- a/public/index.html
+++ b/public/index.html
@@ -41,6 +41,8 @@
             <button class="btn" onClick="equalPressed()">=</button>
 
             <!-- TODO: Buttons -->
+             <!-- add a button for a power (or exponential) function -->
+            <button class="btn" onClick="operationPressed('^')">^</button>
           </div>
         </div>
       </div>