diff --git a/app/Http/Controllers/Backend/Courses/MaterialController.php b/app/Http/Controllers/Backend/Courses/MaterialController.php
index 407d468..8272600 100644
--- a/app/Http/Controllers/Backend/Courses/MaterialController.php
+++ b/app/Http/Controllers/Backend/Courses/MaterialController.php
@@ -102,7 +102,7 @@ public function update(UpdateRequest $request, $id)
                 return redirect()->back()->withInput();
             }
         } catch (Exception $e) {
-            // dd($e);
+            dd($e);
             $this->notice::error('Please try again');
             return redirect()->back()->withInput();
         }
diff --git a/app/Http/Requests/Backend/Course/Materials/AddNewRequest.php b/app/Http/Requests/Backend/Course/Materials/AddNewRequest.php
index 6c0f268..63d6349 100644
--- a/app/Http/Requests/Backend/Course/Materials/AddNewRequest.php
+++ b/app/Http/Requests/Backend/Course/Materials/AddNewRequest.php
@@ -24,7 +24,7 @@ public function rules(): array
         return [
             'materialTitle' => 'required|max:255',
             'materialType' => 'required|max:255',
-            'courseId' => 'required|max:3',
+            'lessonId' => 'required|max:3',
         ];
     }
 }
diff --git a/app/Http/Requests/Backend/Course/Materials/UpdateRequest.php b/app/Http/Requests/Backend/Course/Materials/UpdateRequest.php
index 731dbfb..90d1145 100644
--- a/app/Http/Requests/Backend/Course/Materials/UpdateRequest.php
+++ b/app/Http/Requests/Backend/Course/Materials/UpdateRequest.php
@@ -24,7 +24,7 @@ public function rules(): array
         return [
             'materialTitle' => 'required|max:255',
             'materialType' => 'required|max:255',
-            'courseId' => 'required|max:3',
+            'lessonId' => 'required|max:3',
         ];
     }
 }
diff --git a/app/Models/Course.php b/app/Models/Course.php
index ae8c7b0..9e76196 100644
--- a/app/Models/Course.php
+++ b/app/Models/Course.php
@@ -47,4 +47,9 @@ public function enrollment()
     {
         return $this->hasMany(Enrollment::class);
     }
+
+    public function lesson()
+    {
+        return $this->hasMany(Lesson::class);
+    }
 }
diff --git a/app/Models/Lesson.php b/app/Models/Lesson.php
index ed1165d..2530fac 100644
--- a/app/Models/Lesson.php
+++ b/app/Models/Lesson.php
@@ -8,4 +8,14 @@
 class Lesson extends Model
 {
     use HasFactory;
+
+    public function course()
+    {
+        return $this->belongsTo(Course::class);
+    }
+
+    public function material()
+    {
+        return $this->hasMany(Material::class);
+    }
 }
diff --git a/app/Models/Material.php b/app/Models/Material.php
index 51caf8b..b093313 100644
--- a/app/Models/Material.php
+++ b/app/Models/Material.php
@@ -9,8 +9,8 @@ class Material extends Model
 {
     use HasFactory;
 
-    public function course()
+    public function lesson()
     {
-        return $this->belongsTo(Course::class);
+        return $this->belongsTo(Lesson::class);
     }
 }
diff --git a/public/uploads/courses/contents/5431702869404.mp4 b/public/uploads/courses/contents/5431702869404.mp4
new file mode 100644
index 0000000..625f743
Binary files /dev/null and b/public/uploads/courses/contents/5431702869404.mp4 differ
diff --git a/public/uploads/courses/contents/6981702869810.mp4 b/public/uploads/courses/contents/6981702869810.mp4
new file mode 100644
index 0000000..1094250
Binary files /dev/null and b/public/uploads/courses/contents/6981702869810.mp4 differ
diff --git a/resources/views/backend/layouts/app.blade.php b/resources/views/backend/layouts/app.blade.php
index e2afd09..b4344f7 100644
--- a/resources/views/backend/layouts/app.blade.php
+++ b/resources/views/backend/layouts/app.blade.php
@@ -228,7 +228,7 @@ class="las la-chalkboard-teacher"></i>Instructors</a>
                             </li>
                             <li><a href="{{route('course.index')}}"><i class="las la-book-open"></i>All Courses</a></li>
                             <li><a href="{{route('lesson.index')}}"><i class="las la-chalkboard"></i>Lessons</a></li>
-                            <li><a href="{{route('material.index')}}"><i class="las la-chalkboard"></i>Materials</a></li>
+                            <li><a href="{{route('material.index')}}"><i class="las la-atom"></i></i>Materials</a></li>
                         </ul>
                     </li>
                     <li><a class="has-arrow" href="javascript:void()" aria-expanded="false">