diff --git a/gb-python-ls6-1.py b/gb-python-ls6-1.py
new file mode 100644
index 0000000..6df064d
--- /dev/null
+++ b/gb-python-ls6-1.py
@@ -0,0 +1,19 @@
+import time
+
+
+class TrafficLight:
+
+    def running(self):
+        while True:
+            self.__color = "red"
+            print(f"{self.__color}")
+            time.sleep(7)
+            self.__color = "yellow"
+            print(f"{self.__color}")
+            time.sleep(2)
+            self.__color = "green"
+            print(f"{self.__color}")
+            time.sleep(7)
+
+t = TrafficLight()
+t.running()
\ No newline at end of file
diff --git a/gb-python-ls6-2.py b/gb-python-ls6-2.py
new file mode 100644
index 0000000..3ba5e29
--- /dev/null
+++ b/gb-python-ls6-2.py
@@ -0,0 +1,12 @@
+
+class Road:
+    def __init__(self, length, width):
+        self._length = length
+        self._width = width
+
+    def mass_calculation(self, weight=25, thickness=5):
+        return f'Asphalt mass: {(self._length * self._width * weight * thickness) / 1000} tons'
+
+
+road = Road(5000, 20)
+print(road.mass_calculation())
\ No newline at end of file
diff --git a/gb-python-ls6-3.py b/gb-python-ls6-3.py
new file mode 100644
index 0000000..aa7532c
--- /dev/null
+++ b/gb-python-ls6-3.py
@@ -0,0 +1,19 @@
+class Worker:
+    def __init__(self, name, surname, position, wage, bonus):
+        self.name = name
+        self.surname = surname
+        self.position = position
+        self._income = {"profit": wage, "bonus": bonus}
+
+
+class Position(Worker):
+    def get_full_name(self):
+        return f"{self.name} {self.surname}"
+
+    def get_full_profit(self):
+        return f"{sum(self._income.values())}"
+
+manager = Position("Micky", "Mouse", "CEO", 200000, 25000)
+print(manager.get_full_name())
+print(manager.position)
+print(manager.get_full_profit())
diff --git a/gb-python-ls6-5.py b/gb-python-ls6-5.py
new file mode 100644
index 0000000..72110d7
--- /dev/null
+++ b/gb-python-ls6-5.py
@@ -0,0 +1,31 @@
+class Stationery:
+    def __init__(self, title="Something that can draw"):
+        self.title = title
+
+    def draw(self):
+        print(f"Just start drawing! {self.title}")
+
+
+class Pen(Stationery):
+    def draw(self):
+        print(f"Start write with {self.title} pen!")
+
+
+class Pencil(Stationery):
+    def draw(self):
+        print(f"Start decorate with {self.title} pencil!")
+
+
+class Marker(Stationery):
+    def draw(self):
+        print(f"Start highlight with {self.title} marker!")
+
+
+stat = Stationery()
+stat.draw()
+pen = Pen("Big")
+pen.draw()
+pencil = Pencil("Faber-Castell")
+pencil.draw()
+marker = Marker("Erich Krause")
+marker.draw()
\ No newline at end of file