diff --git a/03-yahoo-weather/YahooWeather.mxml b/03a-binding-and-modeling/YahooWeather.mxml
similarity index 100%
rename from 03-yahoo-weather/YahooWeather.mxml
rename to 03a-binding-and-modeling/YahooWeather.mxml
diff --git a/04-employee-crud/CRUDDynamic.mxml b/03a-crud-dynamic/CRUDDynamic.mxml
similarity index 100%
rename from 04-employee-crud/CRUDDynamic.mxml
rename to 03a-crud-dynamic/CRUDDynamic.mxml
diff --git a/04-employee-crud/dyn-employees.as b/03a-crud-dynamic/dyn-employees.as
similarity index 100%
rename from 04-employee-crud/dyn-employees.as
rename to 03a-crud-dynamic/dyn-employees.as
diff --git a/04-employee-crud/CRUDStatic.mxml b/03a-crud-static/CRUDStatic.mxml
similarity index 100%
rename from 04-employee-crud/CRUDStatic.mxml
rename to 03a-crud-static/CRUDStatic.mxml
diff --git a/04-employee-crud/static-employees.as b/03a-crud-static/static-employees.as
similarity index 100%
rename from 04-employee-crud/static-employees.as
rename to 03a-crud-static/static-employees.as
diff --git a/05-ipc/LocalConn.mxml b/03a-external-interface/Main.mxml
similarity index 100%
rename from 05-ipc/LocalConn.mxml
rename to 03a-external-interface/Main.mxml
diff --git a/05-ipc/BasicTaskReceiver.mxml b/03a-local-connections/BasicTaskReceiver.mxml
similarity index 100%
rename from 05-ipc/BasicTaskReceiver.mxml
rename to 03a-local-connections/BasicTaskReceiver.mxml
diff --git a/05-ipc/TaskSender.mxml b/03a-local-connections/TaskSender.mxml
similarity index 100%
rename from 05-ipc/TaskSender.mxml
rename to 03a-local-connections/TaskSender.mxml
diff --git a/06-shared-objects/SharedObjectExample.mxml b/03a-shared-objects/SharedObjectExample.mxml
similarity index 100%
rename from 06-shared-objects/SharedObjectExample.mxml
rename to 03a-shared-objects/SharedObjectExample.mxml
diff --git a/03a-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.mxml b/03a-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.mxml
new file mode 100644
index 0000000..62b8059
--- /dev/null
+++ b/03a-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.mxml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
+    layout="vertical"
+    backgroundAlpha="0" backgroundColor="#FFFFFF">
+
+    <mx:HTTPService
+        id="areacodeService"
+        url="http://www.webservicex.net/uszip.asmx/GetInfoByAreaCode"
+        resultFormat="e4x"
+    />
+
+    <mx:Script>
+        <![CDATA[
+            public function requestAreacode():void {
+                areacodeService.cancel();
+                var params:Object = new Object();
+                params.USAreaCode = code.text;
+                areacodeService.send(params);
+            }
+        ]]>
+    </mx:Script>
+
+    <mx:PhoneNumberValidator source="{phone}" property="text" />
+    <mx:PhoneFormatter id="phoneFormatter" formatString="###.###.####" />
+
+    <mx:Form>
+        <mx:FormItem label="Enter a phone number.  Characters allowed: ()-.+ and space">
+            <mx:TextInput id="phone" />
+            <mx:Button label="Lookup Area Code" click="requestAreacode();"/>
+        </mx:FormItem>
+
+        <mx:FormItem label="Stripped phone number">
+            <mx:Text id="stripped_phone" text="{phone.text.replace(/\D/g, '')}" />
+        </mx:FormItem>
+
+        <mx:FormItem label="Formatted phone number">
+            <mx:Text text="{phoneFormatter.format(stripped_phone.text)}" />
+        </mx:FormItem>
+
+        <mx:FormItem label="Area Code">
+            <mx:Text id="code" text="{stripped_phone.text.substr(0,3)}" />
+        </mx:FormItem>
+    </mx:Form>
+
+    <mx:DataGrid dataProvider="{areacodeService.lastResult.Table}">
+        <mx:columns>
+            <mx:DataGridColumn headerText="City" dataField="CITY" />
+            <mx:DataGridColumn headerText="State" dataField="STATE" />
+            <mx:DataGridColumn headerText="Zip" dataField="ZIP" />
+            <mx:DataGridColumn headerText="Area Code" dataField="AREA_CODE" />
+            <mx:DataGridColumn headerText="Time Zone" dataField="TIME_ZONE" />
+        </mx:columns>
+    </mx:DataGrid>
+
+    <mx:TextArea id="resultFld" text="{areacodeService.lastResult}" width="400" height="152"/>
+
+</mx:Application>