diff --git a/02week/exercises.js b/02week/exercises.js
new file mode 100644
index 000000000..2cb3c4e4f
--- /dev/null
+++ b/02week/exercises.js
@@ -0,0 +1,38 @@
+let cars = ['Ford','Lamborghini','Ferrari','Yamaha'];
+console.log('Cars array: ' + cars);
+let moreCars = ['Hyundai','Mercedes','Toyota','Honda'];
+console.log('moreCars array: ' + moreCars);
+let totalCars = cars.concat(moreCars);
+console.log('totalCars array: ' + totalCars);
+console.log('Location of Honda: ' + totalCars.indexOf('Honda'));
+console.log('Location of Ford: ' + totalCars.lastIndexOf('Ford'));
+let stringOfCars = totalCars.join();
+console.log('stringOfCars: ' + stringOfCars);
+totalCars = stringOfCars.split(',');
+console.log('Reconstituted "totalCars": ' + totalCars);
+let carsInReverse = totalCars.reverse();
+console.log('carsInReverse: ' + carsInReverse);
+console.log('Cars Alphabetized: ' + carsInReverse.sort());
+//alert(carsInReverse.indexOf('Ford'));  This line of code is copy+pasted from the textbook but generates an error
+sliceHonda = carsInReverse.slice(0,1);
+sliceFord = carsInReverse.slice(7,8);
+removedCars = sliceHonda.concat(sliceFord);
+console.log('RemovedCars: ' + removedCars);
+console.log('Sliced carsInReverse: ' + carsInReverse);
+carsInReverse.splice(1,2,removedCars[0],removedCars[1]);
+console.log('Spliced carsInReverse: ' + carsInReverse);
+carsInReverse.push('Toyota');
+carsInReverse.push('Mercedes');
+console.log('Pushed carsInReverse: ' + carsInReverse);
+let popped = carsInReverse.pop();
+console.log('Popped: ' + popped);
+let shifted = carsInReverse.shift();
+console.log('Shifted: ' + shifted);
+carsInReverse.unshift('Chevy');
+console.log('Final carsInReverse: ' + carsInReverse);
+let numbers = [23,45,0,2];
+numbers.forEach(function(element,index) {
+  element = element + 2;
+  numbers.splice(index,1,element);
+});
+console.log('Numbers: ' + numbers);
diff --git a/03week/ticTacToe.js b/03week/ticTacToe.js
index 1abf5b900..586a53537 100644
--- a/03week/ticTacToe.js
+++ b/03week/ticTacToe.js
@@ -12,6 +12,12 @@ let board = [
   [' ', ' ', ' ']
 ];
 
+let blankBoard = [ //blankBoard is for the purposes of resetting after a game
+  [' ', ' ', ' '],
+  [' ', ' ', ' '],
+  [' ', ' ', ' ']
+];
+
 let playerTurn = 'X';
 
 function printBoard() {
@@ -24,23 +30,55 @@ function printBoard() {
 }
 
 function horizontalWin() {
-  // Your code here
+  if (((board[0][0]!=' ')&&((board[0][0]===board[0][1])&&(board[0][0]===board[0][2]))) || //top row
+      ((board[1][0]!=' ')&&((board[1][0]===board[1][1])&&(board[1][0]===board[1][2]))) || //middle row
+      ((board[2][0]!=' ')&&((board[2][0]===board[2][1])&&(board[2][0]===board[2][2])))){ //bottom row
+        return true
+      }
 }
 
 function verticalWin() {
-  // Your code here
+  if (((board[0][0]!=' ')&&((board[0][0]===board[1][0])&&(board[0][0]===board[2][0]))) || //left column
+      ((board[0][1]!=' ')&&((board[0][1]===board[1][1])&&(board[0][1]===board[2][1]))) || //middle column
+      ((board[0][2]!=' ')&&((board[0][2]===board[1][2])&&(board[0][2]===board[2][2])))){ //right column
+        return true
+      }
 }
 
 function diagonalWin() {
-  // Your code here
+  if (((board[0][0]!=' ')&&((board[0][0]===board[1][1])&&(board[0][0]===board[2][2]))) ||
+      ((board[2][0]!=' ')&&((board[2][0]===board[1][1])&&(board[2][0]===board[0][2])))){
+        return true
+      }
 }
 
 function checkForWin() {
-  // Your code here
+  if (horizontalWin()||verticalWin()||diagonalWin()){
+    console.log("********************");
+    console.log("***PLAYER "+playerTurn+" WINS!***");
+    console.log("********************");
+    board = blankBoard;
+    return true;
+  }
 }
 
 function ticTacToe(row, column) {
-  // Your code here
+    //checks for valid input
+    if (((row==='0')||(row==='1')||(row==='2'))&&((column==='0')||(column==='1')||(column==='2'))){
+      if ((playerTurn==='X')&&(board[row][column]===' ')){
+        board[row][column]='X';
+        checkForWin();
+        playerTurn='O'; //change player turn
+      }  else if ((playerTurn==='O')&&(board[row][column]===' ')){
+        board[row][column]='O';
+        checkForWin();
+        playerTurn='X'; //change player turn
+      } else if (board[row][column]!=' ') {
+        console.log("***That space already has a symbol in it. Try again.***");
+    }
+  }else { //if invalid input
+    console.log("***That input is invalid. Try again.***");
+  }
 }
 
 function getPrompt() {
@@ -55,19 +93,17 @@ function getPrompt() {
 
 }
 
-
-
-// Tests
+// first two tests had errors: the inputs for ticTacToe() need to be strings
 
 if (typeof describe === 'function') {
 
   describe('#ticTacToe()', () => {
     it('should place mark on the board', () => {
-      ticTacToe(1, 1);
+      ticTacToe('1', '1');
       assert.deepEqual(board, [ [' ', ' ', ' '], [' ', 'X', ' '], [' ', ' ', ' '] ]);
     });
     it('should alternate between players', () => {
-      ticTacToe(0, 0);
+      ticTacToe('0', '0');
       assert.deepEqual(board, [ ['O', ' ', ' '], [' ', 'X', ' '], [' ', ' ', ' '] ]);
     });
     it('should check for vertical wins', () => {