diff --git a/app/build.gradle b/app/build.gradle
index 88ed97104..cb3ccdb3a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,7 +9,8 @@ android {
         minSdkVersion 21
         targetSdkVersion 23
         versionCode 1000006
-        versionName "1.0.6-SNAPSHOT"
+        versionName "1.0.6"
+        setProperty("archivesBaseName", "$applicationId-$versionCode")
     }
 
     buildTypes {
@@ -30,4 +31,5 @@ dependencies {
 
     compile 'com.android.support:appcompat-v7:23.4.0'
     compile 'com.android.support:recyclerview-v7:23.4.0'
+    compile 'org.literacyapp:literacyapp-model:1.1.33'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 8030a5f42..8d3c3c20b 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -93,5 +93,15 @@
                 <action android:name="android.intent.action.CONFIGURATION_CHANGED" />
             </intent-filter>
         </service>
+
+        <receiver
+            android:name="com.android.calculator2.receiver.StudentUpdatedReceiver"
+            android:enabled="true"
+            android:exported="true">
+
+            <intent-filter>
+                <action android:name="literacyapp.intent.action.STUDENT_UPDATED" />
+            </intent-filter>
+        </receiver>
     </application>
 </manifest> 
diff --git a/app/src/main/java/com/android/calculator2/Calculator.java b/app/src/main/java/com/android/calculator2/Calculator.java
index 2511d0de4..892b10253 100644
--- a/app/src/main/java/com/android/calculator2/Calculator.java
+++ b/app/src/main/java/com/android/calculator2/Calculator.java
@@ -24,12 +24,15 @@
 import android.animation.ValueAnimator;
 import android.animation.ValueAnimator.AnimatorUpdateListener;
 import android.app.Activity;
+import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.v7.widget.RecyclerView;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
+import android.util.Log;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.View;
@@ -43,6 +46,7 @@
 import android.widget.FrameLayout;
 
 import com.android.calculator2.CalculatorExpressionEvaluator.EvaluateCallback;
+import com.android.calculator2.receiver.StudentUpdatedReceiver;
 import com.android.calculator2.util.DigitLabelHelper;
 import com.android.calculator2.util.PlayerUtil;
 import com.android.calculator2.view.DisplayOverlay;
@@ -63,6 +67,9 @@
 import com.xlythe.math.Persist;
 
 import org.literacyapp.calculator.R;
+import org.literacyapp.model.enums.content.NumeracySkill;
+
+import java.util.Set;
 
 import static com.android.calculator2.util.PlayerUtil.RAW_FILE_EQUALS;
 
@@ -160,6 +167,25 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_calculator);
 
+        // Personalize available operators
+        Button buttonOperatorMul = (Button) findViewById(R.id.op_mul);
+        Button buttonOperatorSub = (Button) findViewById(R.id.op_sub);
+        Button buttonOperatorAdd = (Button) findViewById(R.id.op_add);
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+        Set<String> numeracySkillSet = sharedPreferences.getStringSet(StudentUpdatedReceiver.PREF_STUDENT_NUMERACY_SKILLS, null);
+        Log.d(getClass().getName(), "numeracySkillSet: " + numeracySkillSet);
+        if (numeracySkillSet == null) {
+            buttonOperatorMul.setVisibility(View.INVISIBLE);
+            buttonOperatorSub.setVisibility(View.INVISIBLE);
+        } else {
+            if (!numeracySkillSet.contains(NumeracySkill.MULTIPLICATION.toString())) {
+                buttonOperatorMul.setVisibility(View.INVISIBLE);
+            }
+            if (!numeracySkillSet.contains(NumeracySkill.SUBTRACTION.toString())) {
+                buttonOperatorSub.setVisibility(View.INVISIBLE);
+            }
+        }
+
         mX = getString(R.string.X);
         mDisplayView = (DisplayOverlay) findViewById(R.id.display);
         mFormulaEditText = (AdvancedDisplay) findViewById(R.id.formula);
diff --git a/app/src/main/java/com/android/calculator2/receiver/StudentUpdatedReceiver.java b/app/src/main/java/com/android/calculator2/receiver/StudentUpdatedReceiver.java
new file mode 100644
index 000000000..49749bed8
--- /dev/null
+++ b/app/src/main/java/com/android/calculator2/receiver/StudentUpdatedReceiver.java
@@ -0,0 +1,51 @@
+package com.android.calculator2.receiver;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Set;
+
+public class StudentUpdatedReceiver extends BroadcastReceiver {
+
+    public static final String PREF_STUDENT_NUMBERS = "pref_student_numbers";
+    public static final String PREF_STUDENT_NUMERACY_SKILLS = "pref_student_numeracy_skills";
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        Log.i(getClass().getName(), "onReceive");
+
+        // Customize the user interface to match the current Student's level
+
+        ArrayList<String> availableNumbers = intent.getStringArrayListExtra("availableNumbers");
+        Log.i(getClass().getName(), "availableNumbers: " + availableNumbers);
+
+        ArrayList<String> availableNumeracySkills = intent.getStringArrayListExtra("availableNumeracySkills");
+        Log.i(getClass().getName(), "availableNumeracySkills: " + availableNumeracySkills);
+
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+
+        if (availableNumbers != null) {
+            Set<String> availableNumberSet = new HashSet<>();
+            for (String availableNumber : availableNumbers) {
+                availableNumberSet.add(availableNumber);
+            }
+            Log.i(getClass().getName(), "Storing availableNumbersSet: " + availableNumberSet);
+            sharedPreferences.edit().putStringSet(PREF_STUDENT_NUMBERS, availableNumberSet).commit();
+        }
+
+        if (availableNumeracySkills != null) {
+            Set<String> availableNumeracySkillSet = new HashSet<>();
+            for (String availableNumeracySkill : availableNumeracySkills) {
+                availableNumeracySkillSet.add(availableNumeracySkill);
+            }
+            Log.i(getClass().getName(), "Storing availableNumeracySkillSet: " + availableNumeracySkillSet);
+            sharedPreferences.edit().putStringSet(PREF_STUDENT_NUMERACY_SKILLS, availableNumeracySkillSet).commit();
+        }
+    }
+}
diff --git a/app/src/main/java/com/android/calculator2/widget/CalculatorWidget.java b/app/src/main/java/com/android/calculator2/widget/CalculatorWidget.java
index 2ecd216e2..f839e35ea 100644
--- a/app/src/main/java/com/android/calculator2/widget/CalculatorWidget.java
+++ b/app/src/main/java/com/android/calculator2/widget/CalculatorWidget.java
@@ -6,12 +6,15 @@
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 import android.text.TextUtils;
+import android.util.Log;
 import android.view.View;
 import android.widget.RemoteViews;
 
 import com.android.calculator2.CalculatorExpressionTokenizer;
+import com.android.calculator2.receiver.StudentUpdatedReceiver;
 import com.android.calculator2.util.DigitLabelHelper;
 import com.android.calculator2.util.PlayerUtil;
 import com.xlythe.math.Base;
@@ -23,8 +26,10 @@
 
 import org.javia.arity.SyntaxException;
 import org.literacyapp.calculator.R;
+import org.literacyapp.model.enums.content.NumeracySkill;
 
 import java.text.DecimalFormatSymbols;
+import java.util.Set;
 
 import static com.android.calculator2.util.PlayerUtil.NUMBER_RAW_FILES;
 import static com.android.calculator2.util.PlayerUtil.RAW_FILE_EQUALS;
@@ -302,6 +307,22 @@ private void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
         remoteViews.setViewVisibility(R.id.clear, mClearText ? View.VISIBLE : View.GONE);
         setOnClickListeners(context, appWidgetId, remoteViews);
 
+        // Personalize available operators
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+        Set<String> numeracySkillSet = sharedPreferences.getStringSet(StudentUpdatedReceiver.PREF_STUDENT_NUMERACY_SKILLS, null);
+        Log.d(getClass().getName(), "numeracySkillSet: " + numeracySkillSet);
+        if (numeracySkillSet == null) {
+            remoteViews.setViewVisibility(R.id.mul, View.INVISIBLE);
+            remoteViews.setViewVisibility(R.id.minus, View.INVISIBLE);
+        } else {
+            if (!numeracySkillSet.contains(NumeracySkill.MULTIPLICATION.toString())) {
+                remoteViews.setViewVisibility(R.id.mul, View.INVISIBLE);
+            }
+            if (!numeracySkillSet.contains(NumeracySkill.SUBTRACTION.toString())) {
+                remoteViews.setViewVisibility(R.id.minus, View.INVISIBLE);
+            }
+        }
+
         DigitLabelHelper.getInstance().getTextForDigits(context,
                 new DigitLabelHelper.DigitLabelHelperCallback() {
                     @Override
diff --git a/build.gradle b/build.gradle
index b3e1f0218..b1b3f0c94 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,11 @@ buildscript {
 
 allprojects {
     repositories {
+        mavenLocal()
         jcenter()
+        mavenCentral()
+        maven {
+            url "http://archiva.educativo.eu:8081/repository/internal/"
+        }
     }
 }