diff --git a/Week1/homework/1984.jpg b/Week1/homework/1984.jpg
new file mode 100644
index 000000000..136946d0c
Binary files /dev/null and b/Week1/homework/1984.jpg differ
diff --git a/Week1/homework/The_Crimson_Rivers.jpg b/Week1/homework/The_Crimson_Rivers.jpg
new file mode 100644
index 000000000..73685e158
Binary files /dev/null and b/Week1/homework/The_Crimson_Rivers.jpg differ
diff --git a/Week1/homework/a tale of two cities.jpg b/Week1/homework/a tale of two cities.jpg
new file mode 100644
index 000000000..01bc67f40
Binary files /dev/null and b/Week1/homework/a tale of two cities.jpg differ
diff --git a/Week1/homework/a_clash_of_kings.jpg b/Week1/homework/a_clash_of_kings.jpg
new file mode 100644
index 000000000..95cb46092
Binary files /dev/null and b/Week1/homework/a_clash_of_kings.jpg differ
diff --git a/Week1/homework/app.js b/Week1/homework/app.js
deleted file mode 100644
index ffef836dc..000000000
--- a/Week1/homework/app.js
+++ /dev/null
@@ -1,11 +0,0 @@
-'use strict';
-{
-  const bookTitles = [
-    // Replace with your own book titles
-    'harry_potter_chamber_secrets'
-  ];
-
-
-  // Replace with your own code
-  console.log(bookTitles);
-}
diff --git a/Week1/homework/app1.js b/Week1/homework/app1.js
new file mode 100644
index 000000000..2de171083
--- /dev/null
+++ b/Week1/homework/app1.js
@@ -0,0 +1,13 @@
+const books =[
+    "the_crimson_iver",
+    "hobbit",
+    "1984",
+    "the_return_of_the_king",
+    "the_ruins_of_gorlan ",
+    "a_clash_of_kings",
+    "the_forty_rules_of_love",
+    "my_name_is_red",
+    "the_new_york_triology",
+    "the_tale_of_two_cities"
+];
+console.log(books)
\ No newline at end of file
diff --git a/Week1/homework/app4.js b/Week1/homework/app4.js
new file mode 100644
index 000000000..df0897d25
--- /dev/null
+++ b/Week1/homework/app4.js
@@ -0,0 +1,58 @@
+const bookInfo ={
+    the_crimson_river : {
+        title : "The crimson River",
+        author: "Jean-Christophe Grangé",
+        language : "Frech"
+    
+    },
+    hobbit:{
+        title : "Hobbit",
+        author : "J.J.Tolkein",
+        language : "English"
+
+    },
+    1984:{
+        title : "1984",
+        author : "George Orwel",
+        language : "English"
+
+    },
+
+    the_return_of_the_king:{
+        title : "The Return of the King",
+        author : "J.J.Tolkein",
+        language : "English"
+    },
+
+    the_ruins_of_gorlan:{
+        title : "The Ruins of Gorlan",
+        author : "John Flanagan",
+        language : "English"
+    },
+    a_clash_of_kings:{
+        title : "A Clash of Kings",
+        author : "J. R. Martin",
+        language : "English"
+    },
+    the_forty_rules_of_love:{
+        title : "The Forthy Rules of Love",
+        author : "Elif Safak",
+        language : "Turkish"
+    },
+    my_name_is_red:{
+        title : "my Name is Red",
+        author : "Orhan Pamuk",
+        language : "Turkish"
+    },
+    the_new_york_triology:{
+        title : "THe New York Triology",
+        author :"Paul Auster",
+        language : "English"
+    },
+    the_tale_of_two_cities:{
+        title : "The Tale of Two Cities",
+        author : "Charles Dickens",
+        language : "English"
+    }
+}   
+console.log(bookInfo.my_name_is_red.title);
\ No newline at end of file
diff --git a/Week1/homework/app5-7.js b/Week1/homework/app5-7.js
new file mode 100644
index 000000000..b74c2444f
--- /dev/null
+++ b/Week1/homework/app5-7.js
@@ -0,0 +1,155 @@
+'use strict'
+const books =[
+    "the_crimson_iver",
+    "hobbit",
+    "1984",
+    "the_return_of_the_king",
+    "the_ruins_of_gorlan ",
+    "a_clash_of_kings",
+    "the_forty_rules_of_love",
+    "my_name_is_red",
+    "the_new_york_triology",
+    "the_tale_of_two_cities"
+
+];
+const bookInfo ={
+    the_crimson_river : {
+        title : "The crimson River",
+        author: "Jean-Christophe Grangé",
+        language : "Frech"
+    
+    },
+    hobbit:{
+        title : "Hobbit",
+        author : "J.J.Tolkein",
+        language : "English"
+
+    },
+    1984:{
+        title : "1984",
+        author : "George Orwel",
+        language : "English"
+
+    },
+
+    the_return_of_the_king:{
+        title : "The Return of the King",
+        author : "J.J.Tolkein",
+        language : "English"
+    },
+
+    the_ruins_of_gorlan:{
+        title : "The Ruins of Gorlan",
+        author : "John Flanagan",
+        language : "English"
+    },
+    a_clash_of_kings:{
+        title : "A Clash of Kings",
+        author : "J. R. Martin",
+        language : "English"
+    },
+    the_forty_rules_of_love:{
+        title : "The Forthy Rules of Love",
+        author : "Elif Safak",
+        language : "Turkish"
+    },
+    my_name_is_red:{
+        title : "my Name is Red",
+        author : "Orhan Pamuk",
+        language : "Turkish"
+    },
+    the_new_york_triology:{
+        title : "The New York Triology",
+        author :"Paul Auster",
+        language : "English"
+    },
+    the_tale_of_two_cities:{
+        title : "The Tale of Two Cities",
+        author : "Charles Dickens",
+        language : "English"
+    }
+}   
+
+function bookDetails(){
+    const ul = document.createElement("ul");
+    
+    for (let i in books){
+              
+        let bookLabel = books[i];
+        let li = document.createElement("li")
+        li.innerHTML=bookLabel;
+
+        
+        let bookHead = document.createElement("h2");
+        bookHead.innerHTML=bookLabel.title;
+        
+
+        let bookAuthor = document.createElement("p");
+        bookAuthor.innerHTML = bookLabel.author
+        
+                
+        let bookLanguage = document.createElement("p")
+        bookLanguage.innerHTML=bookLabel.language;
+
+        li.appendChild(ul);
+        bookHead.appendChild(li);
+        bookAuthor.appendChild(li);
+        bookLanguage.appendChild(li);
+
+
+    }
+    document.getElementById("show").appendChild(ul);
+}
+window.addEventListener("load",bookDetails)
+
+
+
+
+
+
+
+//const ul = document.createElement("ul")
+/*function bookList(){
+    for (let i=0; i<bookInfo.title.length; ++i){
+    let li = document.createElement("li");
+    let bookTitel = document.createElement("h2");   
+    let bookAuthor = document.createElement("h3");  
+    let bookLanguage = document.createElement("h4");
+    li.innerHTML=bookInfo.title[i];
+    ul.appendChild(li)
+    }
+    
+    document.getElementById("show").appendChild(ul);
+}
+//window.addEventListener('load',bookList)*/
+/*function bookLabel(){
+    
+    
+    
+    
+    const ul = document.createElement('ul')
+    for ( var k in bookInfo){
+        let book = bookInfo[k];
+        let li = document.createElement("li");
+        
+        let bookTitel = document.createElement("h2");
+        bookTitel.innerHTML=book.title;
+        
+        
+
+        let bookAuthor = document.createElement("p"); 
+        bookAuthor.innerHTML=book.author;
+
+        let bookLanguage = document.createElement("p")
+        bookLanguage.innerHTML=book.language;
+
+        li.appendChild(bookTitel);
+        li.appendChild(bookAuthor);
+        li.appendChild(bookLanguage);
+        ul.appendChild(li);
+    }
+    return ul;
+    document.getElementById("show").appendChild(ul);
+}
+
+window.addEventListener('load',bookLabel)*/
diff --git a/Week1/homework/apps.js b/Week1/homework/apps.js
new file mode 100644
index 000000000..e102622d9
--- /dev/null
+++ b/Week1/homework/apps.js
@@ -0,0 +1,26 @@
+
+
+ const books =[
+    "the_crimson_iver",
+    "hobbit",
+    "1984",
+    "the_return_of_the_king",
+    "the_ruins_of_gorlan ",
+    "a_clash_of_kings",
+    "the_forty_rules_of_love",
+    "my_name_is_red",
+    "the_new_york_triology",
+    "the_tale_of_two_cities"
+
+];
+window.onload=function booksList(){
+   
+    let makeList = "<ul>";
+    for (let i = 0; i<books.length; i++){
+        makeList += "<li>" + books[i] + "</li>";
+      }
+    makeList += "</ul>"
+    document.getElementById("show").innerHTML=makeList;
+    //document.getElementById("show").appendChild(makeList)
+   }
+  
\ No newline at end of file
diff --git a/Week1/homework/hobbit.jpg b/Week1/homework/hobbit.jpg
new file mode 100644
index 000000000..edf6d705a
Binary files /dev/null and b/Week1/homework/hobbit.jpg differ
diff --git a/Week1/homework/my_name_is_red.jpg b/Week1/homework/my_name_is_red.jpg
new file mode 100644
index 000000000..524d1d0af
Binary files /dev/null and b/Week1/homework/my_name_is_red.jpg differ
diff --git a/Week1/homework/the return of the king.jpg b/Week1/homework/the return of the king.jpg
new file mode 100644
index 000000000..bf49ce2c4
Binary files /dev/null and b/Week1/homework/the return of the king.jpg differ
diff --git a/Week1/homework/the_forty_rules_of_love.jpg b/Week1/homework/the_forty_rules_of_love.jpg
new file mode 100644
index 000000000..f74cd5879
Binary files /dev/null and b/Week1/homework/the_forty_rules_of_love.jpg differ
diff --git a/Week1/homework/the_new_york_triology.jpg b/Week1/homework/the_new_york_triology.jpg
new file mode 100644
index 000000000..7d37747dd
Binary files /dev/null and b/Week1/homework/the_new_york_triology.jpg differ
diff --git a/Week1/homework/the_ruins_of_gorlan.jpg b/Week1/homework/the_ruins_of_gorlan.jpg
new file mode 100644
index 000000000..8faf256b4
Binary files /dev/null and b/Week1/homework/the_ruins_of_gorlan.jpg differ
diff --git a/Week2/homework/maartjes_work.js b/Week2/homework/maartjes_work.js
index 0b451d122..f64d8da03 100644
--- a/Week2/homework/maartjes_work.js
+++ b/Week2/homework/maartjes_work.js
@@ -45,3 +45,13 @@ const tuesday = [
 const tasks = monday.concat(tuesday);
 
 // Add your code here
+let twoHoursTasks = tasks.filter(x => x.duration >=120);
+//console.log(twoHoursTasks);
+
+let totalWorkingTime = twoHoursTasks.map(x => x.duration);
+//console.log(totalWorkingTime);
+
+const salaryPerHour = 25.5;
+
+let totalSalary = totalWorkingTime.reduce((acc,val) => (acc + val)/60 * salaryPerHour,0)
+console.log( "The salary of Maartje is "+"€ " +totalSalary.toFixed(2))
\ No newline at end of file
diff --git a/Week2/homework/map_filter.js b/Week2/homework/map_filter.js
index b6af22631..dc8c37bfc 100644
--- a/Week2/homework/map_filter.js
+++ b/Week2/homework/map_filter.js
@@ -2,4 +2,7 @@
 
 const numbers = [1, 2, 3, 4];
 
-// Add your code here
+let oddNumbers = numbers.filter(x => x % 2 !==0);
+console.log(oddNumbers);
+let doubleNumbers = oddNumbers.map(x => x*2);
+console.log('The doubled numbers are :', doubleNumbers)
diff --git a/Week3/homework/1-step3.js b/Week3/homework/1-step3.js
index bee3be0a0..8bbd9203a 100644
--- a/Week3/homework/1-step3.js
+++ b/Week3/homework/1-step3.js
@@ -1,7 +1,7 @@
 'use strict';
 
 function foo(func) {
-  // What to do here? 
+return bar();
 }
 
 function bar() {
diff --git a/Week3/homework/2-step3.js b/Week3/homework/2-step3.js
index 777ca2038..6c3e9e52a 100644
--- a/Week3/homework/2-step3.js
+++ b/Week3/homework/2-step3.js
@@ -2,7 +2,29 @@
 
 function threeFive(startIndex, stopIndex, threeCallback, fiveCallback) {
   const values = [];
-  // Add your code here
+  
+  for (let i =startIndex; i <=stopIndex; i++){
+      values.push(i)
+  }
+  //console.log(values)
+  
+  for(let i = 0; i<values.length; i++){
+    if (values [i] % 5 ===0 && values[i] % 3 === 0){
+      sayThree(values [i])
+      sayFive(values [i])
+
+      }else if (values[i] % 3 === 0){ sayThree(values[i])
+
+      }else if(values [i] % 5 ===0){ sayFive(values [i])
+
+      }
+    
+  }
+  
 }
+let sayThree= (x) => console.log(x + " can be divided by three")
+
+let sayFive= (x) => console.log( x + " can be divided by five")
+
 
-threeFive(10, 15, sayThree, sayFive);
+threeFive(10, 15);
diff --git a/Week3/homework/3-step3.js b/Week3/homework/3-step3.js
index 75200818b..cd9564b2e 100644
--- a/Week3/homework/3-step3.js
+++ b/Week3/homework/3-step3.js
@@ -2,16 +2,24 @@
 
 // use a 'for' loop
 function repeatStringNumTimesWithFor(str, num) {
-  // add your code here
-  return str;
+  // repeat after me
+  let x = "";
+  for (let i=num; i>0; --i){
+   x += str
+  }
+   return x;
 }
 
 console.log('for', repeatStringNumTimesWithFor('abc', 3));
 
 // use a 'while' loop
 function repeatStringNumTimesWithWhile(str, num) {
-  // add your code here
-  return str;
+ let x = ""
+  while(num>0){
+    num--
+    x += str;
+ }
+  return x;
 }
 
 console.log('while', repeatStringNumTimesWithWhile('abc', 3));
@@ -19,7 +27,26 @@ console.log('while', repeatStringNumTimesWithWhile('abc', 3));
 // use a 'do...while' loop
 function repeatStringNumTimesWithDoWhile(str, num) {
   // add your code here
-  return str;
+  let x =""
+  do {
+    x += str;
+    num--
+  } while(num>0)
+  return x;
 }
 
 console.log('while', repeatStringNumTimesWithDoWhile('abc', 3));
+
+
+//bonus
+let solutionWithFunction = (str,num) => {
+    if (num < 0)
+    return str =""
+    if (num == 1)
+      return str
+    else {
+      return str + solutionWithFunction(str,num-1)
+
+  }
+}
+console.log('bonus', solutionWithFunction('abc', 3));
\ No newline at end of file
diff --git a/Week3/homework/4-step3.js b/Week3/homework/4-step3.js
index 52a0e9d74..fc19712e7 100644
--- a/Week3/homework/4-step3.js
+++ b/Week3/homework/4-step3.js
@@ -1,2 +1,9 @@
 'use strict';
 // paste your freeCodeCamp solutions in here
+function Dog(){
+    this.name="Pluto";
+    this.color="Brown";
+    this.numLegs=4
+}
+
+let hound = new Dog;
\ No newline at end of file
diff --git a/Week3/homework/5-step3.js b/Week3/homework/5-step3.js
index 52a0e9d74..02d4fea94 100644
--- a/Week3/homework/5-step3.js
+++ b/Week3/homework/5-step3.js
@@ -1,2 +1,24 @@
 'use strict';
 // paste your freeCodeCamp solutions in here
+function multiplyAll(arr) {
+    var product = 1;
+    let dim = [arr.length, arr[0].length];
+    // Only change code below this line
+    for (let i =0; i<arr.length; i++){
+      for (let j = 0; j<arr[i].length; j++){
+       product *= arr[i][j]
+       
+      }
+  
+    }
+    // Only change code above this line
+    console.log(dim)
+    return product;
+    
+    
+  }
+  
+  
+  // Modify values below to test your code
+  console.log (multiplyAll([[1,2],[3,4],[5,6,7]]))
+  
\ No newline at end of file
diff --git a/Week3/homework/6-step3.js b/Week3/homework/6-step3.js
index 89076b078..112631502 100644
--- a/Week3/homework/6-step3.js
+++ b/Week3/homework/6-step3.js
@@ -4,3 +4,9 @@ const arr2d = [[1, 2], [3, 4], [5, 6]];
 const arr3d = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]];
 
 // add your solution here, or add a comment on how you would tackle this problem
+
+let getElementOfArray = (arr)=>{
+    for(let i in arr){
+        Array.isArray(arr[i]) ? getElementOfArray(arr[i]) : console.log(arr[i]);
+        }
+    }
diff --git a/Week3/homework/7-step3.js b/Week3/homework/7-step3.js
index af1712faf..b9716c41c 100644
--- a/Week3/homework/7-step3.js
+++ b/Week3/homework/7-step3.js
@@ -22,4 +22,5 @@ f2(y);
 console.log(y);
 
 // Add your explanation as a comment here
-
+//in the f1 function val x is referenced because x is an variable. Thus the actual x would not be changed by the execution of f1 
+//because y is an object, the value of it is passed to the function f2 and the execution of f2 causes a change in the value of y.
diff --git a/Week3/homework/step4-bonus.js b/Week3/homework/step4-bonus.js
index 4e89b29e7..1596da031 100644
--- a/Week3/homework/step4-bonus.js
+++ b/Week3/homework/step4-bonus.js
@@ -2,9 +2,16 @@
 
 const values = ['a', 'b', 'c', 'd', 'a', 'e', 'f', 'c'];
 
+function eliminatingDuplicatedElement(arr){
+   return arr.filter (function(value, index, array){ return array.indexOf(value) == index})
+}
+ const uniqueValues = eliminatingDuplicatedElement(values)
+
+
 // Add your function here. Try and come up with a good name for this function
 
 // Replace `yourFunction` with the name of the function you just created
-const uniqueValues = yourFunction(values);
+
 
 console.log(uniqueValues);
+
diff --git a/Week3/homework/step4.js b/Week3/homework/step4.js
index e38d43447..650ef6bcd 100644
--- a/Week3/homework/step4.js
+++ b/Week3/homework/step4.js
@@ -1,8 +1,14 @@
 'use strict';
 
 // Add your code here
+function createBase(parOuter){
+  let inner = (parInner) => console.log(parOuter+parInner);
+  
+  return inner;
+}
 
 const addSix = createBase(6);
 
 addSix(10); // returns 16
 addSix(21); // returns 27
+//addSix(45)