diff --git a/data/grades.js b/data/grades.js
new file mode 100644
index 0000000..b225195
--- /dev/null
+++ b/data/grades.js
@@ -0,0 +1,40 @@
+let grades = [{
+    assignmentName: 'Assignment01',
+    studentName: 'Seven',
+    score: 86
+}, {
+    assignmentName: 'Assignment02',
+    studentName: 'Geneva',
+    score: 71
+}, {
+    assignmentName: 'Assignment03',
+    studentName: 'Seven',
+    score: 90
+}, {
+    assignmentName: 'Assignment04',
+    studentName: 'Geneva',
+    score: 99
+}, {
+    assignmentName: 'Assignment05',
+    studentName: 'Seven',
+    score: 62
+}, {
+    assignmentName: 'Assignment06',
+    studentName: 'Geneva',
+    score: 87
+}];
+
+
+
+
+
+
+
+
+
+
+
+
+module.exports = {
+    grades
+}
\ No newline at end of file
diff --git a/index.js b/index.js
index 856a122..a786e23 100644
--- a/index.js
+++ b/index.js
@@ -30,24 +30,68 @@
 
  */
 
- /**
+/**
 
-    Looping using your preferred looping syntax and updating a shared variable
+   Looping using your preferred looping syntax and updating a shared variable
  
-    2) Loop through the grades data using a for loop.
-        Update `gradeTotal` so it increases value for each item in the array
+   2) Loop through the grades data using a for loop.
+       Update `gradeTotal` so it increases value for each item in the array
+
+*/
+const { grades } = require('./data/grades')
+
+/*
+let gradeTotal = 0
+
+for (let i = 0; i < grades.length; i++) {
+    gradeTotal = grades.score += grades[i]
+}
+
+
+console.log(grades, gradeTotal)
+
+*/
+
+// for In
+/*
+for (const index in grades) {
+    const { score } = grades[index]
+    console.log({ score })
+    gradeTotal += score
+}
+*/
 
- */
- const gradeTotal = 0
 
 
- /**
- 
-    Using reduce
 
-    3) Use Array reduce to do the same total calculation logic
+// forEach
+/*
+let gradeTotal = 0;
 
-        Replace `null` below with the use of `reduce`
+gradeTotal.forEach(grade => grades.score += grades.score)
+*/
+/*
+gradeTotal = 0
+grades.forEach(grade => {
+    gradeTotal += grade.score
+})
+*/
+
+// 
+
+/**
  
-  */
-  gradeTotal = null
+   Using reduce
+   3) Use Array reduce to do the same total calculation logic
+   Replace `null` below with the use of `reduce`
+ 
+ */
+
+
+
+gradeTotal = grades.reduce((total, grade) => {
+    console.log(total, grade)
+    return total + grade.score
+}, 0)
+
+console.log(gradeTotal)
\ No newline at end of file