diff --git a/assignments/array-methods.js b/assignments/array-methods.js
index c2d782f3b..d6ea44c88 100644
--- a/assignments/array-methods.js
+++ b/assignments/array-methods.js
@@ -56,28 +56,58 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs.  Combine both the first and last names into a new array called fullName. 
 let fullName = [];
+for (let i = 0; i < runners.length; i++){
+    fullName.push(runners[i].first_name + " " + runners[i].last_name);
+}
 console.log(fullName);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runner's first names converted to uppercase because the director BECAME DRUNK WITH POWER. Convert each first name into all caps and log the result
 let allCaps = [];
-console.log(allCaps); 
+for(let i = 0; i < runners.length; i++){
+    allCaps.push(runners[i].first_name.toUpperCase());
+  }
+  console.log(allCaps); 
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue.  Get a list of runners with large sized shirts so they can choose a different size. Return an array named largeShirts that contains information about the runners that have a shirt size of L and log the result
 let largeShirts = [];
+for(let i = 0; i < runners.length; i++ ) {
+    if (runners[i].shirt_size === "L") {
+      largeShirts.push(runners[i]);
+    }
+  }
 console.log(largeShirts);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations into a ticketPriceTotal array and log the result
-let ticketPriceTotal = [];
-console.log(ticketPriceTotal);
+let ticketPriceTotal = runners.reduce((donationTotal, donationAmount) => {
+    return donationTotal + donationAmount.donation;
+  }, 0);
+  console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
 // Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
+let lastNameCaps = [];
+for(let i = 0; i < runners.length; i++){
+    lastNameCaps.push(runners[i].last_name.toUpperCase());
+  }
+  console.log(lastNameCaps); 
 
 // Problem 2
+let email = [];
+for (let i = 0; i < runners.length; i++){
+    email.push(runners[i].email);
+}
+console.log(email);
 
-// Problem 3
\ No newline at end of file
+// Problem 3
+let xsmallShirts = [];
+for(let i = 0; i < runners.length; i++ ) {
+    if (runners[i].shirt_size === "XS") {
+      xsmallShirts.push(runners[i]);
+    }
+  }
+  console.log(xsmallShirts);
\ No newline at end of file
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
index d5028657e..a6bb4ccd2 100644
--- a/assignments/callbacks.js
+++ b/assignments/callbacks.js
@@ -24,24 +24,60 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr);
 }
+function length(arr){
+  console.log(arr.length);
+}
+getLength(items, length);
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr);
 }
-
+function lastItem(arr){
+  console.log(arr[3]);
+}
+last(items, lastItem);
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x,y);
+}
+function add(x, y){
+  console.log(x + y);
 }
+sumNums(3, 4, add);
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x,y);
 }
+function multiply(x, y){
+  console.log(x * y);
+}
+sumNums(3, 4, multiply);
+
 
-function contains(item, list, cb) {
+function contains(items, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  return cb(items, list);
 }
+function listResult(items, list){
+  for(let i = 0; i < list.length; i++) {
+    if(list[i] === items) {
+      let result = true;
+      console.log('true');
+      break;
+      } else {
+         let result = false;
+        console.log('false');
+      }
+    }
+}
+contains(items[1], list = items, listResult);
+  
+    
 
 /* STRETCH PROBLEM */
 
diff --git a/assignments/closure.js b/assignments/closure.js
index b16c45ae4..5d0743985 100644
--- a/assignments/closure.js
+++ b/assignments/closure.js
@@ -1,14 +1,26 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
+function speak() {
+  let name = "Steve"
+  function slang() {
+    console.log("What up I'm " + name)
+  }
+  slang();
+}
+console.log(speak());
 
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
+  let = count = 0;
+  return () => (count ++ );
   // Return a function that when invoked increments and returns a counter variable.
 };
-// Example usage: const newCounter = counter();
-// newCounter(); // 1
-// newCounter(); // 2
+ const newCounter = counter();
+ console.log(newCounter());
+ console.log(newCounter());
+ console.log(newCounter());
+ console.log(newCounter());
 
 /* STRETCH PROBLEM, Do not attempt until you have completed all previous tasks for today's project files */