7.md

1. Add the icon and its corresponding action to the build method

class RandomWordsState extends State<RandomWords> {
  ...
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Startup Name Generator'),
        actions: <Widget>[      // Add 3 lines from here...
          IconButton(icon: Icon(Icons.list), onPressed: _pushSaved),
        ],                      // ... to here.
      ),
      body: _buildSuggestions(),
    );
  }
  ...
}

2. Add a _pushSaved() function to the RandomWordsState class

void _pushSaved() {
}

3. Change _pushSaved()

void _pushSaved() {
  Navigator.of(context).push(
  );
}

4. Change _pushSaved()

void _pushSaved() {
  Navigator.of(context).push(
    MaterialPageRoute<void>(   // Add 20 lines from here...
      builder: (BuildContext context) {
        final Iterable<ListTile> tiles = _saved.map(
          (WordPair pair) {
            return ListTile(
              title: Text(
                pair.asPascalCase,
                style: _biggerFont,
              ),
            );
          },
        );
        final List<Widget> divided = ListTile
          .divideTiles(
            context: context,
            tiles: tiles,
          )
          .toList();
      },
    ),                       // ... to here.
  );
}

5. Change _pushSaved()

void _pushSaved() {
  Navigator.of(context).push(
    MaterialPageRoute<void>(
      builder: (BuildContext context) {
        final Iterable<ListTile> tiles = _saved.map(
          (WordPair pair) {
            return ListTile(
              title: Text(
                pair.asPascalCase,
                style: _biggerFont,
              ),
            );
          },
        );
        final List<Widget> divided = ListTile
          .divideTiles(
            context: context,
            tiles: tiles,
          )
              .toList();

        return Scaffold(         // Add 6 lines from here...
          appBar: AppBar(
            title: Text('Saved Suggestions'),
          ),
          body: ListView(children: divided),
        );                       // ... to here.
      },
    ),
  );
}