diff --git a/ContaPessoas/Base.lproj/Main.storyboard b/ContaPessoas/Base.lproj/Main.storyboard
index 99fa0dc..d28dee7 100644
--- a/ContaPessoas/Base.lproj/Main.storyboard
+++ b/ContaPessoas/Base.lproj/Main.storyboard
@@ -2,6 +2,7 @@
 <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6254" systemVersion="14C109" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="49e-Tb-3d3">
     <dependencies>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6247"/>
+        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
     </dependencies>
     <scenes>
         <!--First-->
@@ -13,21 +14,14 @@
                         <viewControllerLayoutGuide type="bottom" id="4ug-Mw-9AY"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="tsR-hK-woN">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" misplaced="YES" text="Contador" textAlignment="center" lineBreakMode="tailTruncation" minimumFontSize="10" translatesAutoresizingMaskIntoConstraints="NO" id="KQZ-1w-vlD">
-                                <rect key="frame" x="222" y="25" width="157.5" height="41.5"/>
-                                <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
-                                <fontDescription key="fontDescription" name="Helvetica" family="Helvetica" pointSize="36"/>
-                                <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="hYm-mB-gId">
-                                <rect key="frame" x="167" y="75" width="128" height="224"/>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="hYm-mB-gId">
+                                <rect key="frame" x="26" y="172" width="128" height="224"/>
                                 <constraints>
-                                    <constraint firstAttribute="height" constant="300" id="GJ8-PI-wpB"/>
-                                    <constraint firstAttribute="width" constant="150" id="wRK-D8-fAn"/>
+                                    <constraint firstAttribute="height" constant="224" id="kS8-KS-qN5"/>
+                                    <constraint firstAttribute="width" constant="128" id="xJ6-jt-nBQ"/>
                                 </constraints>
                                 <state key="normal" image="boy.png">
                                     <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
@@ -36,11 +30,11 @@
                                     <action selector="clickBoy:" destination="9pv-A4-QxB" eventType="touchDown" id="QWF-hu-z2B"/>
                                 </connections>
                             </button>
-                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="jQx-1Z-n65">
-                                <rect key="frame" x="298" y="81" width="111" height="211"/>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="jQx-1Z-n65">
+                                <rect key="frame" x="183" y="179" width="111" height="211"/>
                                 <constraints>
-                                    <constraint firstAttribute="width" constant="300" id="D13-p5-bzh"/>
-                                    <constraint firstAttribute="height" constant="150" id="Q06-7B-no7"/>
+                                    <constraint firstAttribute="width" constant="111" id="YfB-5T-3fJ"/>
+                                    <constraint firstAttribute="height" constant="211" id="dWA-cZ-B8e"/>
                                 </constraints>
                                 <state key="normal" title="Button" image="girl.png">
                                     <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
@@ -49,21 +43,32 @@
                                     <action selector="clickGirl:" destination="9pv-A4-QxB" eventType="touchDown" id="7bZ-J4-gek"/>
                                 </connections>
                             </button>
+                            <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" text="Contador" textAlignment="center" lineBreakMode="tailTruncation" minimumFontSize="10" translatesAutoresizingMaskIntoConstraints="NO" id="KQZ-1w-vlD">
+                                <rect key="frame" x="81" y="48" width="157.5" height="41.5"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="41.5" id="PAg-Rd-LKD"/>
+                                    <constraint firstAttribute="width" constant="157.5" id="uwe-Mk-vaL"/>
+                                </constraints>
+                                <fontDescription key="fontDescription" name="Helvetica" family="Helvetica" pointSize="36"/>
+                                <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
                         </subviews>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
                         <constraints>
-                            <constraint firstAttribute="centerY" secondItem="hYm-mB-gId" secondAttribute="centerY" constant="113" id="25f-oe-XWF"/>
-                            <constraint firstAttribute="centerX" secondItem="KQZ-1w-vlD" secondAttribute="centerX" id="6BV-lF-sBN"/>
-                            <constraint firstAttribute="centerY" secondItem="KQZ-1w-vlD" secondAttribute="centerY" constant="254.25" id="7NO-DY-fvY"/>
-                            <constraint firstAttribute="centerX" secondItem="hYm-mB-gId" secondAttribute="centerX" constant="105" id="BIr-Ng-iZd"/>
-                            <constraint firstAttribute="centerX" secondItem="jQx-1Z-n65" secondAttribute="centerX" constant="-53.5" id="HvV-q8-w7n"/>
-                            <constraint firstItem="jQx-1Z-n65" firstAttribute="width" secondItem="hYm-mB-gId" secondAttribute="width" id="QXq-FV-L3B"/>
-                            <constraint firstItem="jQx-1Z-n65" firstAttribute="top" secondItem="hYm-mB-gId" secondAttribute="top" constant="31" id="Sxc-Z0-BuJ"/>
-                            <constraint firstItem="jQx-1Z-n65" firstAttribute="height" secondItem="hYm-mB-gId" secondAttribute="height" id="eqk-7z-cvb"/>
-                            <constraint firstAttribute="top" secondItem="KQZ-1w-vlD" secondAttribute="top" id="exm-UA-ej4"/>
+                            <constraint firstItem="hYm-mB-gId" firstAttribute="leading" secondItem="tsR-hK-woN" secondAttribute="leadingMargin" constant="10" id="2hJ-ZM-bN0"/>
+                            <constraint firstItem="hYm-mB-gId" firstAttribute="leading" secondItem="tsR-hK-woN" secondAttribute="leadingMargin" constant="10" id="3O9-Ix-2is"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="jQx-1Z-n65" secondAttribute="trailing" constant="10" id="9xL-C4-bzE"/>
+                            <constraint firstAttribute="centerY" secondItem="jQx-1Z-n65" secondAttribute="centerY" id="Kfv-wa-9Gr"/>
+                            <constraint firstAttribute="centerX" secondItem="KQZ-1w-vlD" secondAttribute="centerX" id="bEg-IP-0hx"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="jQx-1Z-n65" secondAttribute="trailing" constant="10" id="cU6-VX-gUl"/>
+                            <constraint firstAttribute="centerY" secondItem="hYm-mB-gId" secondAttribute="centerY" id="eBm-DH-umT"/>
+                            <constraint firstItem="KQZ-1w-vlD" firstAttribute="top" secondItem="Ia1-K6-d13" secondAttribute="bottom" constant="28" id="pHD-md-piT"/>
                         </constraints>
                     </view>
                     <tabBarItem key="tabBarItem" title="First" image="first" id="acW-dT-cKf"/>
+                    <simulatedScreenMetrics key="simulatedDestinationMetrics" type="retina4"/>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="W5J-7L-Pyd" sceneMemberID="firstResponder"/>
             </objects>
@@ -123,15 +128,6 @@
                                 <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
-                            <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Wdw-cL-Bgf">
-                                <rect key="frame" x="299" y="406" width="54" height="30"/>
-                                <state key="normal" title="Atualiza">
-                                    <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
-                                </state>
-                                <connections>
-                                    <action selector="click:" destination="8rJ-Kc-sve" eventType="touchUpInside" id="Wmf-Ss-Ora"/>
-                                </connections>
-                            </button>
                         </subviews>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
                         <constraints>
diff --git a/ContaPessoas/Contador.h b/ContaPessoas/Contador.h
index 18b7c16..8bfd599 100644
--- a/ContaPessoas/Contador.h
+++ b/ContaPessoas/Contador.h
@@ -8,11 +8,17 @@
 
 @interface Contador : NSObject 
 
++ (Contador *) contGlobal;
+
 - (void)maisUmCueca;
 - (void)maisUmaGata;
 
 -(int)getBoys;
 -(int)getGirls;
 
+-(int)getTotal;
+
+@property (nonatomic, weak) id mostrar;
+
 @end
 
diff --git a/ContaPessoas/Contador.m b/ContaPessoas/Contador.m
index fa64ad8..f198b38 100644
--- a/ContaPessoas/Contador.m
+++ b/ContaPessoas/Contador.m
@@ -8,6 +8,7 @@
 
 #import <Foundation/Foundation.h>
 #import "Contador.h"
+#import "SecondViewController.h"
 
 
 @implementation Contador {
@@ -15,6 +16,15 @@ @implementation Contador {
     int girl;
 }
 
++ (Contador *)contGlobal{
+    static Contador *contGlobal = nil;
+    
+    if (!contGlobal){
+        contGlobal = [[Contador alloc] init];
+    }
+    return contGlobal;
+}
+
 -(id)init {
     self = [super init];
     if (self) {
@@ -26,9 +36,11 @@ -(id)init {
 
 - (void)maisUmCueca {
     boy = boy + 1;
+    [_mostrar atualiza];
 }
 - (void)maisUmaGata {
     girl++;
+    [_mostrar atualiza];
 }
 
 -(int)getBoys {
@@ -39,6 +51,10 @@ -(int)getGirls {
     return girl;
 }
 
+-(int)getTotal{
+    return boy + girl;
+}
+
 
 
 @end
diff --git a/ContaPessoas/FirstViewController.h b/ContaPessoas/FirstViewController.h
index 59c8301..cf4a501 100644
--- a/ContaPessoas/FirstViewController.h
+++ b/ContaPessoas/FirstViewController.h
@@ -7,8 +7,11 @@
 //
 
 #import <UIKit/UIKit.h>
+@class Contador;
 
-@interface FirstViewController : UIViewController
+@interface FirstViewController : UIViewController{
+    Contador *contador;
+}
 
 - (IBAction)clickBoy:(id)sender;
 - (IBAction)clickGirl:(id)sender;
diff --git a/ContaPessoas/FirstViewController.m b/ContaPessoas/FirstViewController.m
index fc70dd5..a8d21eb 100644
--- a/ContaPessoas/FirstViewController.m
+++ b/ContaPessoas/FirstViewController.m
@@ -2,24 +2,26 @@
 //  FirstViewController.m
 //  ContaPessoas
 //
-//  Created by Vinicius Miana on 2/18/15.
-//  Copyright (c) 2015 Vinicius Miana. All rights reserved.
+//  Created by Lidia Chou on 2/18/15.
+//  Copyright (c) 2015 Lidia Chou. All rights reserved.
+//
+//
 //
 
 #import "FirstViewController.h"
 #import "Contador.h"
+#import "SecondViewController.h"
 
 @interface FirstViewController ()
 
 @end
 
-@implementation FirstViewController {
-    Contador *contador;
-}
+@implementation FirstViewController 
+
 
 - (void)viewDidLoad {
     [super viewDidLoad];
-    contador = [[Contador alloc] init];
+    contador = [Contador contGlobal];
     // Do any additional setup after loading the view, typically from a nib.
 }
 
diff --git a/ContaPessoas/SecondViewController.h b/ContaPessoas/SecondViewController.h
index f907831..d5d8aca 100644
--- a/ContaPessoas/SecondViewController.h
+++ b/ContaPessoas/SecondViewController.h
@@ -7,13 +7,17 @@
 //
 
 #import <UIKit/UIKit.h>
+@class Contador;
 
-@interface SecondViewController : UIViewController
+@interface SecondViewController : UIViewController{
+    Contador *contador;
+}
 
 @property (weak, nonatomic) IBOutlet UILabel *totalBoys;
 @property (weak, nonatomic) IBOutlet UILabel *totalGirls;
 @property (weak, nonatomic) IBOutlet UILabel *total;
-- (IBAction)click:(id)sender;
+
+-(void)atualiza;
 
 @end
 
diff --git a/ContaPessoas/SecondViewController.m b/ContaPessoas/SecondViewController.m
index a2a66f5..c4ef08e 100644
--- a/ContaPessoas/SecondViewController.m
+++ b/ContaPessoas/SecondViewController.m
@@ -8,10 +8,10 @@
 
 #import "SecondViewController.h"
 #import "Contador.h"
+#import "FirstViewController.h"
+
+@interface SecondViewController ()
 
-@interface SecondViewController () {
-      Contador *contador;
-}
 
 @end
 
@@ -19,7 +19,9 @@ @implementation SecondViewController
 
 - (void)viewDidLoad {
     [super viewDidLoad];
-    contador = [[Contador alloc] init];
+    contador = [Contador contGlobal];
+    contador.mostrar = self;
+    [self atualiza];
 }
 
 
@@ -29,10 +31,10 @@ - (void)didReceiveMemoryWarning {
     // Dispose of any resources that can be recreated.
 }
 
-- (IBAction)click:(id)sender {
+- (void)atualiza {
     _totalBoys.text = [NSString stringWithFormat: @"%d", [contador getBoys]];
     _totalGirls.text = [NSString stringWithFormat: @"%d", [contador getGirls]];
-    _total.text = [NSString stringWithFormat:@"%d", [contador getGirls] + [contador getBoys] ];
+    _total.text = [NSString stringWithFormat:@"%d", [contador getTotal] ];
 }
 
 
diff --git a/ContaPessoasTests/ContaPessoasTests.m b/ContaPessoasTests/ContaPessoasTests.m
index 579bb3f..8a36f2f 100644
--- a/ContaPessoasTests/ContaPessoasTests.m
+++ b/ContaPessoasTests/ContaPessoasTests.m
@@ -21,6 +21,7 @@ - (void)testContaMeninos {
     Contador *c = [[Contador alloc] init];
     [c maisUmCueca];
     XCTAssert(([c getBoys] == 1), @"Pass");
+    XCTAssert(([c getGirls] == 0), @"Pass");
 }
 
 - (void)testContaMeninas {