Flutter two widgets in body? - flutter

Question

So my flutter app works fine, however I want to make some changes to it.
The 1st change I want to do is create a horizontal scroll widget that has images that are clickable that change stations.
But to do this I first need to join two widgets into one.
In my home_widget.dart file I have this code:
final List<Widget> _children = [TracksWidget(),
NewsWidget(),
AboutWidget()];
The code above changes the body section of the home_widget.dart section. But now what I want to do is add StationsWidget() to the bottom of the TrackWidget() - Note this widget refreshes every 30 seconds. So ideally I need to make sure it does not refresh with it.
So can a body have two widgets?
Full code of test.dart (which is where I am trying to add the widget)
import 'package:flutter/material.dart';
import 'trackswidget.dart';
class TestWidget extends StatelessWidget {
// final Color color;
// PlaceholderWidget(this.color);
#override
Widget build(BuildContext context) {
double c_width = MediaQuery.of(context).size.width;
return new Container (
padding: const EdgeInsets.all(16.0),
margin: const EdgeInsets.only(bottom: 0.0),
width: c_width,
child: new SingleChildScrollView(
child: new Column (
children: <Widget>[
Column(
children: <Widget>[
Child: TracksWidget()
],
),
Column(
children: <Widget>[
new Text('Advertise on ',style: TextStyle(color: Colors.black, fontSize: 20.0),),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children:
),
],
),
]
),
),
);
}
}
The error I am getting is
'Widget' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try changing the type of the parameter, or casting the argument to 'List'.
children: TracksWidget,
Just so you all know what I am trying to achieve. We redesigned our iOS Swift app and now want our flutter app to match.

Answer 1

Strictly speaking, no, the body takes exactly one Widget. You could say it takes none if you pass null, but you cannot pass more than one.
However, there are widgets that group other widgets. Your one body widget could as well be a Row and that row can have multiple child widgets.
You already did that in your title.
A nice graphical representation can be found in the documentation.