diff --git a/Day 4 Homework - Karen.md b/Day 4 Homework - Karen.md
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+```
+class Toaster:
+    def __init__(self):
+        self.ticks_left = 10
+        self.is_on = False
+
+    def get_uses(self):
+        return {
+            'toast': "Put bread in the toaster to make toast."
+        }
+
+    def start(self):
+        print("Toaster started.")
+
+    def use(self, *args, **kwargs):
+        if 'toast' in args:
+            if not self.is_on:
+                print("Turn the toaster on first!🔌")
+                return True
+
+            print("Toasting...")
+            self.ticks_left -= 1
+            if self.ticks_left == 0:
+                print("Toasting complete! 🍞")
+                return False
+
+        return True
+
+    def tick(self):
+        return True
+
+    def stop(self):
+        print("Toaster stopped. ⏸")
+```
+
+```
+class AdvancedToaster:
+    def __init__(self):
+        self.ticks_left = 10
+        self.is_on = False
+        self.toastiness = 0
+        self.bread_count = 0
+        self.crumb_tray = []
+        self.temperature = None
+        self.weight = 1.5  # kg
+        self.voltage = 120  # V
+        self.power = 750  # W
+        self.materials = ['stainless steel', 'plastic', 'copper']
+        self.dimensions = {'length': 30, 'width': 20, 'height': 25}  # cm
+        self.color = 'silver'
+        self.price = 50  # USD
+
+    def get_uses(self):
+        return {
+            'turn_on': "Turn on the toaster.",
+            'turn_off': "Turn off the toaster.",
+            'insert_bread': "Insert bread into the toaster.",
+            'eject_bread': "Eject bread from the toaster.",
+            'increase_toastiness': "Increase the level of toastiness.",
+            'decrease_toastiness': "Decrease the level of toastiness.",
+            'add_bread': "Add a slice of bread to the toaster.",
+            'remove_bread': "Remove a slice of bread from the toaster.",
+            'toast': "Toast the bread in the toaster.",
+            'empty_crumb_tray': "Empty the crumb tray.",
+            'weigh': "Weigh the toaster.",
+            'measure_voltage': "Measure the voltage of the toaster.",
+            'measure_power': "Measure the power of the toaster.",
+            'get_materials': "Get the materials the toaster is made of.",
+            'get_dimensions': "Get the dimensions of the toaster.",
+            'get_color': "Get the color of the toaster.",
+            'get_price_tag': "Get the estimated value of the toaster."
+        }
+
+    def start(self):
+        print("Toaster started.")
+        
+    def set_temperature(self, temperature):
+        self.temperature = temperature
+        print(f"Toaster temperature set to {temperature} degrees Celsius.")
+
+    def get_temperature(self):
+        if self.temperature is not None:
+            print(f"Toaster temperature is {self.temperature} degrees Celsius.")
+        else:
+            print("Toaster temperature has not been set yet.")
+            
+    def use(self, *args, **kwargs):
+        if 'turn_on' in args:
+            self.is_on = True
+            print("Toaster turned on.")
+
+        elif 'turn_off' in args:
+            self.is_on = False
+            print("Toaster turned off.")
+
+        elif 'insert_bread' in args:
+            if not self.is_on:
+                print("Turn the toaster on first!")
+                return True
+
+            if self.bread_count > 2:
+                print("Too many bread slices! Maximum is 2.")
+                return True
+
+            self.bread_count += 1
+            print(f"{self.bread_count} bread slice{'s' if self.bread_count > 1 else ''} inserted.")
+
+        elif 'eject_bread' in args:
+            if self.bread_count == 0:
+                print("No bread slices to eject.")
+                return True
+
+            self.bread_count -= 1
+            print("Bread slice ejected.")
+            
+        elif 'decrease_toastiness' in args:
+            if self.toastiness > 0:
+                self.toastiness -= 1
+                print(f"Toastiness decreased to {self.toastiness}.")
+        
+        elif 'add_bread' in args:
+            if self.bread_count < 2:
+                self.bread_count += 1
+                print(f"{self.bread_count} slice(s) of bread added to the toaster.")
+                
+        elif 'remove_bread' in args:
+            if self.bread_count > 0:
+                self.bread_count -= 1
+                print(f"{self.bread_count} slice(s) of bread removed from the toaster.")
+                
+        elif 'toast' in args:
+            if self.is_on and self.bread_count > 0:
+                print("Toasting bread...")
+                for i in range(self.toastiness):
+                    print("Tick...")
+                print("Bread toasted!")
+                self.bread_count -= 1
+            elif not self.is_on:
+                print("Toaster is not turned on.")
+            elif self.bread_count == 0:
+                print("Toaster does not contain any bread.")
+            else:
+                print(f"DEBUG:Invalid use of the toaster.")
+                return False
+                
+        elif 'empty_crumb_tray' in args:
+            self.crumb_tray = []
+            print("Crumb tray emptied.")
+            
+    def weigh(self):
+        print(f"The weight of the toaster is {self.weight} kg.")
+            
+    def measure_voltage(self):
+        # Method to measure the voltage of the toaster
+        print(f"The voltage of the toaster is {self.voltage} V.")
+
+    def measure_power(self):
+        # Method to measure the power of the toaster
+        print(f"The power of the toaster is {self.power} W.")
+
+            
+    defer get_materials(self):
+        print(f"The toaster is made of: {', '.join(self.materials)}.")
+            
+    defer get_dimensions(self):
+        print(f"The dimensions of the toaster are: {self.dimensions['length']} cm x {self.dimensions['width']} cm x {self.dimensions['height']} cm.")
+            
+    defer get_color(self):
+        print(f"The color of the toaster is {self.color}.")
+            
+    defer get_price_tag(self):
+        print(f"The estimated value of the toaster is {self.price_tag}.")
+```