diff --git a/_sources/lectures/TWP15/TWP15_3.rst b/_sources/lectures/TWP15/TWP15_3.rst
index 02df53250b..84e6b3e8f0 100644
--- a/_sources/lectures/TWP15/TWP15_3.rst
+++ b/_sources/lectures/TWP15/TWP15_3.rst
@@ -51,6 +51,20 @@ Algunos ejercicios
    pero esta vez solo los números impares.
    
    ~~~~
+   def print_odd_numbers(n):
+
+
+   ====
+   from unittest.gui import TestCaseGui
+
+
+   class myTests(TestCaseGui):
+      def testOne(self):
+         self.assertEqual(print_odd_numbers(10), [1, 3, 5, 7, 9], "Esperado [1, 3, 5, 7, 9]")
+         self.assertEqual(print_odd_numbers(1), [1], "Esperado [1]")
+         self.assertEqual(print_odd_numbers(0), [], "Esperado []")
+
+   myTests().main()
 
 
 .. activecode:: ac_l15_3e
@@ -59,3 +73,14 @@ Algunos ejercicios
    Escriba un programa que imprima los primeros 10 múltiplos de 3.
    
    ~~~~
+   def print_multiples_of_3():
+
+   ====
+   from unittest.gui import TestCaseGui
+
+
+   class myTests(TestCaseGui):
+      def testOne(self):
+         self.assertEqual(print_multiples_of_3(), [3, 6, 9, 12, 15, 18, 21, 24, 27, 30], "Esperado [3, 6, 9, 12, 15, 18, 21, 24, 27, 30]")
+
+   myTests().main()
diff --git a/_sources/lectures/TWP15/TWP15_3_en.rst b/_sources/lectures/TWP15/TWP15_3_en.rst
index b4df73db6b..9ffd8cf07e 100644
--- a/_sources/lectures/TWP15/TWP15_3_en.rst
+++ b/_sources/lectures/TWP15/TWP15_3_en.rst
@@ -51,11 +51,35 @@ Some Exercises
    the user, but this time only the odd numbers.
    
    ~~~~
+   def print_odd_numbers(n):
 
 
+   ====
+   from unittest.gui import TestCaseGui
+
+
+   class myTests(TestCaseGui):
+      def testOne(self):
+         self.assertEqual(print_odd_numbers(10), [1, 3, 5, 7, 9], "Expected [1, 3, 5, 7, 9]")
+         self.assertEqual(print_odd_numbers(1), [1], "Expected [1]")
+         self.assertEqual(print_odd_numbers(0), [], "Expected []")
+
+   myTests().main()
+
 .. activecode:: ac_l15_3e_en
    :nocodelens:
 
    Write a program that prints the first 10 multiples of 3.
    
-   ~~~~
\ No newline at end of file
+   ~~~~
+   def print_multiples_of_3():
+
+   ====
+   from unittest.gui import TestCaseGui
+
+
+   class myTests(TestCaseGui):
+      def testOne(self):
+         self.assertEqual(print_multiples_of_3(), [3, 6, 9, 12, 15, 18, 21, 24, 27, 30], "Expected [3, 6, 9, 12, 15, 18, 21, 24, 27, 30]")
+
+   myTests().main()
\ No newline at end of file