corrected folder structure

lib/main.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 
-import 'model/pages/task_overview_page.dart';
+import 'pages/task_create_page.dart';
+import 'pages/task_edit_page.dart';
+import 'pages/task_overview_page.dart';
 
 void main() {
   runApp(const MainApp());
@@ -12,7 +14,11 @@ class MainApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      routes: {TaskOverviewPage.routeName: (context) => TaskOverviewPage()},
+      routes: {
+        TaskCreatePage.routeName: (context) => TaskCreatePage(),
+        TaskOverviewPage.routeName: (context) => TaskOverviewPage(),
+        TaskEditPage.routeName: (context) => TaskEditPage(),
+      },
       initialRoute: TaskOverviewPage.routeName,
     );
   }

lib/pages/task_create_page.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/material.dart';
+
+class TaskCreatePage extends StatelessWidget {
+  static const routeName = '/create';
+  const TaskCreatePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Placeholder();
+  }
+}

lib/pages/task_edit_page.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+
+import '../model/task.dart';
+
+class TaskEditPage extends StatelessWidget {
+  static const routeName = '/edit';
+  const TaskEditPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final task = ModalRoute.of(context)!.settings.arguments as Task;
+
+    return Scaffold(
+      appBar: AppBar(title: Text(task.title)),
+      body: Form(child: Column()),
+    );
+  }
+}

lib/pages/task_overview_page.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 
-import '../../example_data.dart';
-import '../task.dart';
+import '../example_data.dart';
+import '../model/task.dart';
+import 'task_create_page.dart';
+import 'task_edit_page.dart';
 
 class TaskOverviewPage extends StatefulWidget {
   static const String routeName = '/';
@@ -23,6 +25,10 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
         onReorderItem: (oldIndex, newIndex) =>
             reorderList(tasks, oldIndex, newIndex),
       ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: onCreateTaskTapped,
+        child: Icon(Icons.add),
+      ),
     );
   }
 
@@ -33,9 +39,17 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
       key: Key(task.id),
       title: Text(task.title),
       subtitle: Text(task.description),
+      onTap: () => onTaskTapped(task),
     );
   }
 
+  Future<Task?> onTaskTapped(Task task) async {
+    final result = await Navigator.of(
+      context,
+    ).pushNamed(TaskEditPage.routeName, arguments: task);
+    return result as Task?;
+  }
+
   List<Task> reorderList(List<Task> tasks, oldIndex, newIndex) {
     final item = tasks.removeAt(oldIndex);
     tasks.insert(newIndex, item);
@@ -48,4 +62,15 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
 
     return reordered;
   }
+
+  void onCreateTaskTapped() async {
+    //TODO: example data call
+    final result =
+        await Navigator.of(context).pushNamed(TaskCreatePage.routeName)
+            as Task?;
+
+    if (result != null) {
+      tasks.add(result);
+    }
+  }
 }