===================================================================
--- original.js
+++ change.js
@@ -5,228 +5,175 @@
 
 /**** 
 * Classes
 ****/ 
-var AnswerButton = Container.expand(function () {
+var CalculatorButton = Container.expand(function () {
 	var self = Container.call(this);
-	var background = self.attachAsset('answerButton', {
+	self.buttonType = 'number';
+	self.value = '';
+	self.background = self.attachAsset('calculatorButton', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	var answerText = new Text2('0', {
-		size: 80,
+	self.buttonText = new Text2('0', {
+		size: 60,
 		fill: 0xFFFFFF
 	});
-	answerText.anchor.set(0.5, 0.5);
-	self.addChild(answerText);
-	self.value = 0;
-	self.isCorrect = false;
-	self.background = background;
-	self.answerText = answerText;
-	self.setValue = function (value, correct) {
+	self.buttonText.anchor.set(0.5, 0.5);
+	self.addChild(self.buttonText);
+	self.setValue = function (value, type) {
 		self.value = value;
-		self.isCorrect = correct;
-		self.answerText.setText(value.toString());
-	};
-	self.setCorrectStyle = function () {
+		self.buttonType = type || 'number';
+		self.buttonText.setText(value.toString());
+		// Change background based on button type
 		self.removeChild(self.background);
-		self.background = self.attachAsset('answerButtonCorrect', {
-			anchorX: 0.5,
-			anchorY: 0.5
-		});
+		if (type === 'operator') {
+			self.background = self.attachAsset('operatorButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		} else if (type === 'equals') {
+			self.background = self.attachAsset('equalsButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		} else if (type === 'clear') {
+			self.background = self.attachAsset('clearButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		} else {
+			self.background = self.attachAsset('calculatorButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		}
 		self.addChildAt(self.background, 0);
 	};
-	self.setWrongStyle = function () {
-		self.removeChild(self.background);
-		self.background = self.attachAsset('answerButtonWrong', {
-			anchorX: 0.5,
-			anchorY: 0.5
-		});
-		self.addChildAt(self.background, 0);
-	};
-	self.resetStyle = function () {
-		self.removeChild(self.background);
-		self.background = self.attachAsset('answerButton', {
-			anchorX: 0.5,
-			anchorY: 0.5
-		});
-		self.addChildAt(self.background, 0);
-	};
 	self.down = function (x, y, obj) {
-		if (self.isCorrect) {
-			self.setCorrectStyle();
-			LK.getSound('correct').play();
-			LK.setScore(LK.getScore() + 10 * streakMultiplier);
-			currentStreak++;
-			updateStreakMultiplier();
-			correctAnswers++;
-			generateNewProblem();
-		} else {
-			self.setWrongStyle();
-			LK.getSound('wrong').play();
-			wrongAnswers++;
-			currentStreak = 0;
-			updateStreakMultiplier();
-			if (wrongAnswers >= maxWrongAnswers) {
-				LK.showGameOver();
-			} else {
-				LK.setTimeout(function () {
-					generateNewProblem();
-				}, 1000);
-			}
-		}
+		LK.getSound('buttonPress').play();
+		handleButtonPress(self.value, self.buttonType);
 	};
 	return self;
 });
 
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x4a90e2
+	backgroundColor: 0xf0f0f0
 });
 
 /**** 
 * Game Code
 ****/ 
-var currentNum1 = 0;
-var currentNum2 = 0;
-var correctAnswer = 0;
-var answerButtons = [];
-var currentStreak = 0;
-var streakMultiplier = 1;
-var wrongAnswers = 0;
-var correctAnswers = 0;
-var maxWrongAnswers = 3;
-var difficultyLevel = 1;
-// Create background
-var background = game.attachAsset('background', {
-	x: 0,
-	y: 0
-});
-// Create problem display area
-var problemArea = game.attachAsset('problemArea', {
+// Calculator state variables
+var displayValue = '0';
+var firstOperand = null;
+var operator = null;
+var waitingForOperand = false;
+// Create calculator display
+var calculatorDisplay = game.attachAsset('display', {
 	anchorX: 0.5,
 	anchorY: 0.5,
 	x: 1024,
-	y: 400
+	y: 300
 });
-// Create problem text
-var problemText = new Text2('5 + 3 = ?', {
-	size: 120,
-	fill: 0x333333
+// Create display text
+var displayText = new Text2('0', {
+	size: 80,
+	fill: 0x00ff00
 });
-problemText.anchor.set(0.5, 0.5);
-problemArea.addChild(problemText);
-// Create answer buttons
-for (var i = 0; i < 4; i++) {
-	var button = new AnswerButton();
-	button.x = 300 + i % 2 * 450 + i % 2 * 150;
-	button.y = 800 + Math.floor(i / 2) * 200;
-	answerButtons.push(button);
-	game.addChild(button);
+displayText.anchor.set(1, 0.5);
+displayText.x = 850;
+displayText.y = 0;
+calculatorDisplay.addChild(displayText);
+// Create calculator buttons
+var calculatorButtons = [];
+var buttonLayout = [['C', '+', '', ''], ['7', '8', '9', ''], ['4', '5', '6', ''], ['1', '2', '3', ''], ['0', '', '', '=']];
+for (var row = 0; row < buttonLayout.length; row++) {
+	for (var col = 0; col < 4; col++) {
+		var buttonValue = buttonLayout[row][col];
+		if (buttonValue !== '') {
+			var button = new CalculatorButton();
+			var buttonType = 'number';
+			if (buttonValue === 'C') {
+				buttonType = 'clear';
+			} else if (buttonValue === '+') {
+				buttonType = 'operator';
+			} else if (buttonValue === '=') {
+				buttonType = 'equals';
+			}
+			button.setValue(buttonValue, buttonType);
+			button.x = 400 + col * 320;
+			button.y = 500 + row * 170;
+			calculatorButtons.push(button);
+			game.addChild(button);
+		}
+	}
 }
-// Create score display
-var scoreText = new Text2('Score: 0', {
-	size: 60,
-	fill: 0xFFFFFF
-});
-scoreText.anchor.set(0, 0);
-scoreText.x = 150;
-scoreText.y = 150;
-LK.gui.topLeft.addChild(scoreText);
-// Create streak display
-var streakText = new Text2('Streak: 0x', {
-	size: 50,
-	fill: 0xFFFFFF
-});
-streakText.anchor.set(1, 0);
-streakText.x = -50;
-streakText.y = 150;
-LK.gui.topRight.addChild(streakText);
-// Create wrong answers display
-var wrongText = new Text2('Wrong: 0/3', {
-	size: 40,
-	fill: 0xFFFFFF
-});
-wrongText.anchor.set(0.5, 0);
-wrongText.x = 0;
-wrongText.y = 220;
-LK.gui.top.addChild(wrongText);
-function generateNumbers() {
-	if (difficultyLevel === 1) {
-		// Single digit numbers
-		currentNum1 = Math.floor(Math.random() * 9) + 1;
-		currentNum2 = Math.floor(Math.random() * 9) + 1;
-	} else if (difficultyLevel === 2) {
-		// Double digit numbers
-		currentNum1 = Math.floor(Math.random() * 90) + 10;
-		currentNum2 = Math.floor(Math.random() * 90) + 10;
+function updateDisplay() {
+	displayText.setText(displayValue);
+}
+function inputNumber(number) {
+	if (waitingForOperand) {
+		displayValue = number;
+		waitingForOperand = false;
 	} else {
-		// Triple digit numbers
-		currentNum1 = Math.floor(Math.random() * 900) + 100;
-		currentNum2 = Math.floor(Math.random() * 900) + 100;
+		displayValue = displayValue === '0' ? number : displayValue + number;
 	}
-	correctAnswer = currentNum1 + currentNum2;
+	updateDisplay();
 }
-function generateWrongAnswers() {
-	var wrongAnswers = [];
-	var attempts = 0;
-	while (wrongAnswers.length < 3 && attempts < 50) {
-		var wrongAnswer;
-		var variation = Math.floor(Math.random() * 20) + 1;
-		if (Math.random() < 0.5) {
-			wrongAnswer = correctAnswer + variation;
-		} else {
-			wrongAnswer = correctAnswer - variation;
-		}
-		if (wrongAnswer !== correctAnswer && wrongAnswer > 0 && wrongAnswers.indexOf(wrongAnswer) === -1) {
-			wrongAnswers.push(wrongAnswer);
-		}
-		attempts++;
+function inputOperator(nextOperator) {
+	var inputValue = parseFloat(displayValue);
+	if (firstOperand === null) {
+		firstOperand = inputValue;
+	} else if (operator) {
+		var currentValue = firstOperand || 0;
+		var newValue = calculate(currentValue, inputValue, operator);
+		displayValue = newValue.toString();
+		firstOperand = newValue;
+		updateDisplay();
 	}
-	return wrongAnswers;
+	waitingForOperand = true;
+	operator = nextOperator;
 }
-function generateNewProblem() {
-	// Update difficulty based on correct answers
-	if (correctAnswers >= 10 && difficultyLevel < 2) {
-		difficultyLevel = 2;
-	} else if (correctAnswers >= 25 && difficultyLevel < 3) {
-		difficultyLevel = 3;
+function calculate(firstOperand, secondOperand, operator) {
+	if (operator === '+') {
+		return firstOperand + secondOperand;
 	}
-	generateNumbers();
-	problemText.setText(currentNum1 + ' + ' + currentNum2 + ' = ?');
-	var wrongAnswersList = generateWrongAnswers();
-	var allAnswers = [correctAnswer].concat(wrongAnswersList);
-	// Shuffle answers
-	for (var i = allAnswers.length - 1; i > 0; i--) {
-		var j = Math.floor(Math.random() * (i + 1));
-		var temp = allAnswers[i];
-		allAnswers[i] = allAnswers[j];
-		allAnswers[j] = temp;
+	return secondOperand;
+}
+function performCalculation() {
+	var inputValue = parseFloat(displayValue);
+	if (firstOperand !== null && operator) {
+		var newValue = calculate(firstOperand, inputValue, operator);
+		displayValue = newValue.toString();
+		firstOperand = null;
+		operator = null;
+		waitingForOperand = true;
+		updateDisplay();
 	}
-	// Set button values
-	for (var i = 0; i < 4; i++) {
-		answerButtons[i].setValue(allAnswers[i], allAnswers[i] === correctAnswer);
-		answerButtons[i].resetStyle();
-	}
+}
+function clearCalculator() {
+	displayValue = '0';
+	firstOperand = null;
+	operator = null;
+	waitingForOperand = false;
 	updateDisplay();
 }
-function updateStreakMultiplier() {
-	if (currentStreak >= 10) {
-		streakMultiplier = 3;
-	} else if (currentStreak >= 5) {
-		streakMultiplier = 2;
-	} else {
-		streakMultiplier = 1;
+function handleButtonPress(value, type) {
+	if (type === 'number') {
+		inputNumber(value);
+	} else if (type === 'operator') {
+		inputOperator(value);
+	} else if (type === 'equals') {
+		performCalculation();
+	} else if (type === 'clear') {
+		clearCalculator();
 	}
 }
-function updateDisplay() {
-	scoreText.setText('Score: ' + LK.getScore());
-	streakText.setText('Streak: ' + currentStreak + 'x' + streakMultiplier);
-	wrongText.setText('Wrong: ' + wrongAnswers + '/' + maxWrongAnswers);
-}
-// Initialize first problem
-generateNewProblem();
+// Initialize display
+updateDisplay();
 game.update = function () {
-	// Game logic is handled by button events
+	// Calculator logic is handled by button events
 };
\ No newline at end of file