diff --git a/Les 3/3-1.py b/Les 3/3-1.py
new file mode 100644
index 0000000..e69de29
diff --git a/Les 3/3-2.py b/Les 3/3-2.py
new file mode 100644
index 0000000..afbf21c
--- /dev/null
+++ b/Les 3/3-2.py	
@@ -0,0 +1,3 @@
+print(0==(1==2))
+print(2+(3==4)+5==7)
+print((1<-1)==(3>4))
diff --git a/Les 3/3-3.py b/Les 3/3-3.py
new file mode 100644
index 0000000..f2d016c
--- /dev/null
+++ b/Les 3/3-3.py	
@@ -0,0 +1,3 @@
+uurloon = int(input("Wat is je uurloon?"))
+uren = int(input("Hoeveel uur heb je gewerkt?"))
+print("Je salaris is", uurloon*uren, "Euro")
\ No newline at end of file
diff --git a/Les 3/test.py b/Les 3/test.py
new file mode 100644
index 0000000..e69de29
diff --git a/les 4/4-1.py b/les 4/4-1.py
new file mode 100644
index 0000000..fb2992a
--- /dev/null
+++ b/les 4/4-1.py	
@@ -0,0 +1,3 @@
+score = int(input("Wat is je score: "))
+if score >= 15:
+    print("Je bent geslaagd")
\ No newline at end of file
diff --git a/les 4/4-2.py b/les 4/4-2.py
new file mode 100644
index 0000000..6e4add2
--- /dev/null
+++ b/les 4/4-2.py	
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+#title          :4-2.py
+#description    :Opdracht 4.2 - If with 2 boolean operators
+#author         :Marcel Haazen
+#email          :marcel@haazen.xyz
+#date           :21-09-2019 - 23:20
+#version        :0.1
+#usage          :python3 4-2.py
+#notes          :
+#python_version :3.7.4
+#==============================================================================
+age = input("Wat is je leeftijd: ")
+pasport = input("Heb je een Nederlandse paspoort: ")
+
+if age >= 18 and pasport == "ja":
+    print("Je mag stemmen")
\ No newline at end of file
diff --git a/les 4/4-3.py b/les 4/4-3.py
new file mode 100644
index 0000000..4931277
--- /dev/null
+++ b/les 4/4-3.py	
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+#title          :4-3.py
+#description    :Opdracht 4.3 - If/else
+#author         :Marcel Haazen
+#email          :marcel@haazen.xyz
+#date           :21-09-2019 - 23:22
+#version        :0.1
+#usage          :python3 4-3.py
+#notes          :
+#python_version :3.7.4
+#==============================================================================
+age = int(input("Wat is je leeftijd: "))
+pasport = input("Heb je een Nederlandse paspoort: ")
+
+if age >= 18 and pasport == "ja":
+    print("Je mag stemmen")
+else:
+    print("Helaas je mag niet stemmen")
\ No newline at end of file
diff --git a/les 4/4-4.py b/les 4/4-4.py
new file mode 100644
index 0000000..d0e4b9b
--- /dev/null
+++ b/les 4/4-4.py	
@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+#title          :4-4.py
+#description    :Opdracht 4.4 - For, If & strings
+#author         :Marcel Haazen
+#email          :marcel@haazen.xyz
+#date           :21-09-2019 - 23:28
+#version        :0.1
+#usage          :python3 4-4.py
+#notes          :
+#python_version :3.7.4
+#==============================================================================
+days = ['maandag','dinsdag','woensdag']
+
+for day in days:
+    print(day[:2])
\ No newline at end of file
diff --git a/les 4/4-5.py b/les 4/4-5.py
new file mode 100644
index 0000000..9d7b7f6
--- /dev/null
+++ b/les 4/4-5.py	
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+#title          :4-5.py
+#description    :Opdracht 4.5 - For, If & numbers
+#author         :Marcel Haazen
+#email          :marcel@haazen.xyz
+#date           :21-09-2019 - 23:30
+#version        :0.1
+#usage          :python3 4-5.py
+#notes          :
+#python_version :3.7.4
+#==============================================================================
+numbers = [1,2,3,4,5,6,7,8,9,10]
+
+for number in numbers:
+    if number % 2 == 0:
+        print(number)
\ No newline at end of file
diff --git a/les 4/4-6.py b/les 4/4-6.py
new file mode 100644
index 0000000..2d1bf05
--- /dev/null
+++ b/les 4/4-6.py	
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+#title          :4-6.py
+#description    :Opdracht 4.6 - For, If & vowels
+#author         :Marcel Haazen
+#email          :marcel@haazen.xyz
+#date           :21-09-2019 - 23:33
+#version        :0.1
+#usage          :python3 4-6.py
+#notes          :
+#python_version :3.7.4
+#==============================================================================
+s = "Guido van Rossum heeft programmeertaal Python bedacht."
+vowels  = "aeiou"
+for letter in s:
+    if letter in vowels:
+        print(letter)
\ No newline at end of file