diff --git a/src/components/BoardSwitcher.jsx b/src/components/BoardSwitcher.jsx
index e99793a..3dabf17 100644
--- a/src/components/BoardSwitcher.jsx
+++ b/src/components/BoardSwitcher.jsx
@@ -1,4 +1,4 @@
-import React from "react";
+import React, {useState} from "react";
 
 function Board(props) {
   let className = "board";
@@ -10,12 +10,18 @@ function Board(props) {
 }
 
 function BoardSwitcher(props) {
+  const  [board, setBoard] = useState(0);
+
   let boards = [];
   for (let ii = 0; ii < props.numBoards; ii++) {
-    let isSelected = ii === 0;
+    let isSelected = ii === board;
     boards.push(<Board index={ii} selected={isSelected} key={ii} />);
   }
 
+  function Toggle () {
+    setBoard((board+1)%5);
+  }
+
   return (
     <div>
       <div className="boards">{boards}</div>