Full source code can be found <http://plnkr.co/edit/rQSg5eMhm9uc9dSWnWEU?p=preview>

In the index.html file if I use only one controller at a time it works. That is if I use

```
<body>
    <div id="inputExample" ng-app="AngularJSTestBedWebApp" ng-controller="AngularJSInputExampleController">
        input example: <input type="text" ng-model="inputValue" /><br/>
        This is the updated value: {{inputValue}}        
    </div>   
</body>

```

or if I use

```
<body>
    <div id="scopeExample" ng-app="AngularJSTestBedWebApp" ng-controller="AngularJSScopeExampleController">
        {{understandingScope}}
    </div> 
</body>

```

It will also work. However if I use both controllers at the same time such as

```
<body>
    <div id="scopeExample" ng-app="AngularJSTestBedWebApp" ng-controller="AngularJSScopeExampleController">
        {{understandingScope}}
    </div>

    <div id="inputExample" ng-app="AngularJSTestBedWebApp" ng-controller="AngularJSInputExampleController">
        input example: <input type="text" ng-model="inputValue" /><br/>
        This is the updated value: {{inputValue}}        
    </div>   
</body>

```

The second controller never gets used. {{inputValue}} never gets assigned a default value and also never updates when you type in the text box. It literally just says "{{inputValue}}" the entire time.

I'm sure this is probably something easy but I'm very new to AngularJS. Thanks in advance for any help.