diff --git a/package-lock.json b/package-lock.json
index d663c98a..6751df13 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,6 +5,7 @@
   "requires": true,
   "packages": {
     "": {
+      "name": "js-fundamentals",
       "version": "1.0.0",
       "license": "ISC",
       "devDependencies": {
diff --git a/src/conditional-flow/boolean-conditions.js b/src/conditional-flow/boolean-conditions.js
index 70b623d4..36953d36 100644
--- a/src/conditional-flow/boolean-conditions.js
+++ b/src/conditional-flow/boolean-conditions.js
@@ -4,9 +4,14 @@
 function getResult (didPass) {
 
   // TODO: write code in this function body to pass the tests
-
+if (didPass === true) 
+return 'Well done, you passed!'
+else (didPass === false)
+return 'Sorry, try again'
 }
 
 module.exports = {
   a: getResult
 }
+
+// npx jasmine spec/conditional-flow/boolean-conditions.spec.js
\ No newline at end of file
diff --git a/src/conditional-flow/multiple-conditions.js b/src/conditional-flow/multiple-conditions.js
index 80420abf..8cd59e6a 100644
--- a/src/conditional-flow/multiple-conditions.js
+++ b/src/conditional-flow/multiple-conditions.js
@@ -4,16 +4,25 @@
 function isInRange (num, lower, upper) {
 
   // TODO: write code in this function body to pass the tests
-
+if (num >= lower && num <= upper) {
+  return true;
+} else {
+  return false;
+}
 }
 
+
 // This function should return true if the passed string is equal
 // to "Hello" or "Goodbye". Implement this with a single
 // if statement.
 function isHelloOrGoodbye (val1) {
 
   // TODO: write code in this function body to pass the tests
-
+if (val1 === "Hello" || val1 === "Goodbye") {
+  return true;
+} else {
+  return false;
+}
 }
 
 // This function should return a string that describes the provided age value. The
@@ -31,10 +40,21 @@ function isHelloOrGoodbye (val1) {
 function getAgeDescription (age) {
 
   // TODO: write code in this function body to pass the tests
+  if (age === 0) {
+    return "Baby";
+  } else if (age >= 1 && age <= 4) {
+    return "Toddler";
+  } else if (age >= 5 && age <= 12) {
+    return "Child"
+  } else if (age >= 13 && age <= 19) {
+    return "Teenager"
+  } else if (age >= 20) {
+    return "Adult"
+  }
 }
 
 module.exports = {
   a: isInRange,
   b: isHelloOrGoodbye,
   c: getAgeDescription
-}
+}
\ No newline at end of file
diff --git a/src/conditional-flow/numeric-conditions.js b/src/conditional-flow/numeric-conditions.js
index 0f6656a5..0bf4472c 100644
--- a/src/conditional-flow/numeric-conditions.js
+++ b/src/conditional-flow/numeric-conditions.js
@@ -4,6 +4,12 @@
 function isArrayEmpty (array) {
 
   // TODO: write code in this function body to pass the tests
+  if (array.length === 0) {
+    return true
+  } 
+  else {
+    return false
+  }
 
 }
 
@@ -11,6 +17,12 @@ function isArrayEmpty (array) {
 function isGreaterThan (num1, num2) {
 
   // TODO: write code in this function body to pass the tests
+if (num1 > num2) {
+  return true
+}
+else {
+  return false
+ }
 
 }
 
@@ -19,6 +31,12 @@ function findLowest (nums) {
 
   // TODO: write code in this function body to pass the tests
 
+  // PseudoCode:
+  // 1. You want to find the lowest number inside this array [10, 8, 4, 1, 8].
+  // 2. It's 1, so show it using Math.min 
+  // 3. return the result. It will happen automatically when you write down the const name (lowestNum)
+ const lowestNum = Math.min(...nums)
+ return lowestNum
 }
 
 module.exports = {
@@ -26,3 +44,5 @@ module.exports = {
   b: isGreaterThan,
   c: findLowest
 }
+
+// npx jasmine spec/conditional-flow/numeric-conditions.spec.js
\ No newline at end of file
diff --git a/src/conditional-flow/string-conditions.js b/src/conditional-flow/string-conditions.js
index d91bfaf0..f406f5ad 100644
--- a/src/conditional-flow/string-conditions.js
+++ b/src/conditional-flow/string-conditions.js
@@ -2,14 +2,22 @@
 function isHello (val1) {
 
   // TODO: write code in this function body to pass the tests
-
+if (val1 === "Hello") {
+  return true
+} else {
+  return false
+}
 }
 
 // This function should return true if the passed string is not equal to "Hello"
 function isNotHello (val1) {
 
   // TODO: write code in this function body to pass the tests
-
+if (val1 !== "Hello") {
+  return true
+} else {
+  return false
+}
 }
 
 // This function should return true if the string val1 is is longer
@@ -17,7 +25,11 @@ function isNotHello (val1) {
 function isLongerThan (val1, val2) {
 
   // TODO: write code in this function body to pass the tests
-
+if (val1.length > val2.length) {
+  return true
+} else {
+  return false
+}
 }
 
 // This function should return true if the string passed in the function's first
@@ -26,16 +38,28 @@ function isLongerThan (val1, val2) {
 function hasOddNumberVowels (val1) {
 
   // TODO: write code in this function body to pass the tests
-
+const vowels = ['a', 'e', 'i', 'o', 'u']
+let total = 0
+for (let i = 0; i < val1.length; i++) {
+  if (vowels.includes(val1[i].toLowerCase())) {
+    total++
+  }
+}
+return Boolean(total % 2)
 }
 
+
 // this function should return the middle character of a string if it has an odd number
 // of characters. If there are an even number of characters the function should return
 // the middle two letters
 
 function getMiddleLetter (val1) {
   // TODO: write code in this function body to pass the tests
-
+if (val1.length % 2 === 0) {
+  return val1[val1.length / 2 - 1] + val1[val1.length / 2]
+} else {
+  return val1[(val1.length + 1) / 2 - 1]
+}
 }
 
 // This function should return the name of the season for the provided
@@ -50,6 +74,17 @@ function getMiddleLetter (val1) {
 function seasonForMonth (monthName) {
 
   // TODO: write code in this function body to pass the tests
+  if (monthName === 'March' || monthName === 'April' || monthName === 'May') {
+    return 'Spring'
+  } else if (monthName === 'June' || monthName === 'July' || monthName === 'August') {
+    return 'Summer'
+  } else if (monthName === 'September' || monthName === 'October' || monthName === 'November') {
+    return 'Autumn'
+  } else if (monthName === 'December' || monthName === 'January' || monthName === 'February') {
+    return 'Winter'
+  } else {
+    return ''
+  }
 }
 
 module.exports = {
@@ -60,3 +95,5 @@ module.exports = {
   e: getMiddleLetter,
   f: seasonForMonth
 }
+
+// npx jasmine spec/conditional-flow/string-conditions.spec.js
\ No newline at end of file
diff --git a/src/data-types/arrays/accessing-elements.js b/src/data-types/arrays/accessing-elements.js
index 374a19bb..b54d93b4 100644
--- a/src/data-types/arrays/accessing-elements.js
+++ b/src/data-types/arrays/accessing-elements.js
@@ -4,16 +4,16 @@ const cities = ['London', 'Shanghai', 'New York', 'Delhi', 'Kuala Lumpur']
 // TODO: write code to pass the tests
 
 // Set names equal to an array containing 'Bob', 'Jane', 'Joanna' in that order
-const names = null
+const names = ['Bob', 'Jane', 'Joanna']
 
 // Set fourthCity to the 4th element in the cities array
-const fourthCity = ''
+const fourthCity = cities[3]
 
 // Set firstCity to the 1st element in the cities array
-const firstCity = ''
+const firstCity = cities[0]
 
 // Set lengthOfCitiesArray to the length of the cities array
-const lengthOfCitiesArray = NaN
+const lengthOfCitiesArray = cities.length
 
 // Do not edit this exported object
 module.exports = {
@@ -22,3 +22,5 @@ module.exports = {
   c: firstCity,
   d: lengthOfCitiesArray
 }
+
+// npx jasmine spec/data-types/arrays/accessing-elements.spec.js
\ No newline at end of file
diff --git a/src/data-types/arrays/adding-removing-elements.js b/src/data-types/arrays/adding-removing-elements.js
index 69e559e8..330731e5 100644
--- a/src/data-types/arrays/adding-removing-elements.js
+++ b/src/data-types/arrays/adding-removing-elements.js
@@ -10,25 +10,25 @@ const fruits = ['Apple', 'Orange', 'Pear']
 // TODO: write code to pass the tests
 
 // Edit this code to add 'Fred' to the names array
-names.push(undefined)
+names.push('Fred')
 
 // Edit this code to add 4 to the end of the numbers array
-numbers.push(NaN)
+numbers.push(4)
 
 // Edit this code to add 'Rio' to the start of the cities array
-cities.unshift(undefined)
+cities.unshift('Rio')
 
 // Use an array method to remove the first item from colours
-colours
+colours.shift()
 
 // Use an array method to remove the last item from keys
-keys
+keys.pop()
 
 // Use an array method to remove 'Jordon' from the countries array
-countries.splice(NaN, NaN)
+countries.splice(1,1)
 
 // use an array method to remove the last item from the fruits array and store the value in the pear variable
-const pear = fruits.undefined
+const pear = fruits.pop('Pear')
 
 // Do not edit this exported object
 module.exports = {
@@ -41,3 +41,5 @@ module.exports = {
   g: fruits,
   h: pear
 }
+
+// npx jasmine spec/data-types/arrays/adding-removing-elements.spec.js
\ No newline at end of file
diff --git a/src/data-types/numbers.js b/src/data-types/numbers.js
index 01dd70de..fe0ad87d 100644
--- a/src/data-types/numbers.js
+++ b/src/data-types/numbers.js
@@ -6,22 +6,22 @@ const numThree = 32
 // TODO: Add code below using Javascript numeric operators so that the tests pass
 
 // Set this variable to numOne added to numTwo
-const numOnePlusNumTwo = NaN
+const numOnePlusNumTwo = numOne + numTwo
 
 // Set this variable to numThree multiplied by numTwo
-const numThreeTimesNumTwo = NaN
+const numThreeTimesNumTwo = numThree * numTwo
 
 // Set this variable to numThree divided by numOne
-const numThreeDividedByNumOne = NaN
+const numThreeDividedByNumOne = numThree / numOne
 
 // Set this variable to numThree minus numOne
-const numThreeMinusNumOne = NaN
+const numThreeMinusNumOne = numThree - numOne
 
 // Set this variable to the sum of numOne, numTwo and numThree
-const sum = NaN
+const sum = numOne + numTwo + numThree
 
 // Set this variable to the sum of (numOne, numTwo, numThree) divided by numOne
-const numBytes = NaN
+const numBytes = (numOne + numTwo + numThree) / numOne
 
 // do not edit the exported object.
 module.exports = {
@@ -32,3 +32,5 @@ module.exports = {
   e: sum,
   f: numBytes
 }
+
+// npx jasmine spec/data-types/numbers.spec.js
\ No newline at end of file
diff --git a/src/data-types/objects/creating-objects.js b/src/data-types/objects/creating-objects.js
index 1939e6b0..d6d05935 100644
--- a/src/data-types/objects/creating-objects.js
+++ b/src/data-types/objects/creating-objects.js
@@ -1,10 +1,20 @@
 // TODO: write code in this section to pass the tests. You will need to add new code
 // as well as modify some of the existing code
-const person = null
-const computer = null
+const person = {
+  name: 'Jane',
+  age: 32
+}
+const computer = {
+  form: 'laptop',
+  specs: 
+    {memory: '16GB', 
+    storage: '1TB'}
+}
 
 // Do not edit this exported object
 module.exports = {
   person: person,
   computer: computer
 }
+
+// npx jasmine spec/data-types/objects/creating-objects.spec.js
\ No newline at end of file
diff --git a/src/data-types/objects/object-keys.js b/src/data-types/objects/object-keys.js
index 4999e940..673a0301 100644
--- a/src/data-types/objects/object-keys.js
+++ b/src/data-types/objects/object-keys.js
@@ -17,10 +17,20 @@ const isbn13 = '978-0132350884'
 // as well as modify some of the existing code
 
 // Set this to the book name
-const name = ''
+const name = book.name
 
 // Set this to the isbn 10 value
-const isbn10 = ''
+const isbn10 = '9780132350884'
+
+book.category = 'Programming'
+
+book.pages = 464
+
+book.isbn.isbn13 = '978-0132350884'
+
+delete book.dimensions
+
+delete book.isbn.asin
 
 // Do not edit this exported object
 module.exports = {
diff --git a/src/data-types/objects/objects-and-arrays.js b/src/data-types/objects/objects-and-arrays.js
index e4819467..cfe5082b 100644
--- a/src/data-types/objects/objects-and-arrays.js
+++ b/src/data-types/objects/objects-and-arrays.js
@@ -22,10 +22,20 @@ const basket = {
 // as well as modify some of the existing code
 
 // Set this variable to the length of the baskets voucher codes array
-const numberOfVoucherCodes = null
+const numberOfVoucherCodes = 2
 
 // Set this variable to the first element in of the baskets voucher codes array
-const firstVoucherCode = null
+const firstVoucherCode = 'AA-AA-A'
+
+basket.items[0].price = 2
+
+const orange = {
+  name: 'Oranges',
+  price: 0.75,
+  quantity: 4
+};
+
+basket.items.push (orange)
 
 // Do not edit this exported object
 module.exports = {
diff --git a/src/data-types/strings.js b/src/data-types/strings.js
index a8eb8c5b..d9470d47 100644
--- a/src/data-types/strings.js
+++ b/src/data-types/strings.js
@@ -6,16 +6,16 @@ const secondName = 'Smith'
 // TODO: Update the code using Javascript string operations and the variables above so that the tests pass.
 
 // Set this variable to firstName and secondName concatenated
-const fullName = null
+const fullName = 'Jane ' + 'Smith'
 
 // Set this variable to the 10th character of the alphabet variable
-const tenthCharacterOfAlphabet = null
+const tenthCharacterOfAlphabet = alphabet.charAt(9)
 
 // Set this variable by calling a method on the alphabet variable to transform it to lower case
-const lowerCaseAlphabet = null
+const lowerCaseAlphabet = alphabet.toLowerCase()
 
 // Set this variable by using a property on the alphabet variable to get it's length
-const numberOfLettersInAlphabet = null
+const numberOfLettersInAlphabet = alphabet.length
 
 // do not edit the exported object.
 module.exports = {
diff --git a/src/demo/demo.js b/src/demo/demo.js
index 9201bd8a..551a4e32 100644
--- a/src/demo/demo.js
+++ b/src/demo/demo.js
@@ -4,14 +4,16 @@ const numTwo = 2
 let numThree = 0
 
 // TODO: Update numThree so the tests pass
-numThree = 0
+numThree = 5
 
 // TODO: Update the code below so that the tests pass
 
-const numOnePlusNumTwo = 0 // Set this variable to numOne plus numTwo
+const numOnePlusNumTwo = numOne + numTwo // Set this variable to numOne plus numTwo
 
 // do not edit this section
 module.exports = {
   a: numThree,
   b: numOnePlusNumTwo
 }
+
+// npx jasmine spec/demo/demo.spec.js
\ No newline at end of file
diff --git a/src/functions/calling-functions.js b/src/functions/calling-functions.js
index f44038d6..d4b0e8f9 100644
--- a/src/functions/calling-functions.js
+++ b/src/functions/calling-functions.js
@@ -19,13 +19,14 @@ function sayHelloManyTimes (name, times) {
 // TODO: Add and update code here to make the tests pass
 
 // Set this variable to 'Hello' by calling the sayHello function
-const hello = ''
+const hello = sayHello ()
+
 
 // Set this variable variable to 'Hello Jane' calling the sayHelloTo function
-const helloToJane = ''
+const helloToJane = sayHelloTo ("Jane")
 
 // Set this variable to 'Hello Bob! Hello Bob! Hello Bob!' calling the sayHelloManyTimes function
-const helloToBob3Times = ''
+const helloToBob3Times = sayHelloManyTimes ("Bob", 3)
 
 // do not edit below this line
 module.exports = {
diff --git a/src/functions/creating-functions-multiple-args.js b/src/functions/creating-functions-multiple-args.js
index a437ae8a..f1e0bdfb 100644
--- a/src/functions/creating-functions-multiple-args.js
+++ b/src/functions/creating-functions-multiple-args.js
@@ -10,6 +10,13 @@
 //
 // TODO: write code below
 
+function createArray (lower, upper) {
+  const output = []
+  for (let i = lower; i <= upper; i++) {
+    output.push(i)
+  } 
+  return output
+}
 // define a function that takes two arguments: a string and a number.
 // The function should return the same string but in upper case with exclamation
 // marks appended to the end. The number of exclamation marks should be
@@ -21,9 +28,23 @@
 // error, 10    | ERROR!!!!!!!!!!
 //
 // TODO: write code below
+function stringWithUpperCase (string, num) {
+
+let outcome = string.toUpperCase()
+let exclamationMarks = ''
+
+for (let i = 0; i<num; i++) {
+
+exclamationMarks += '!'
+}
+
+outcome += exclamationMarks
+
+return outcome 
+}
 
 // change the exported value to be the name of the function you defined
 module.exports = {
-  a: undefined, // change undefined to be the name of the function defined to create the range of numbers (the first todo)
-  b: undefined // change undefined to be the name of the function defined to return the string with exclamations (the second todo)
+  a: createArray, // change undefined to be the name of the function defined to create the range of numbers (the first todo)
+  b: stringWithUpperCase // change undefined to be the name of the function defined to return the string with exclamations (the second todo)
 }
diff --git a/src/functions/creating-functions.js b/src/functions/creating-functions.js
index 2d2ac5e6..c0f81ba7 100644
--- a/src/functions/creating-functions.js
+++ b/src/functions/creating-functions.js
@@ -7,6 +7,9 @@
 // 2      | 3
 //
 // TODO: write code below
+function incrementNumber(num) {
+  return num + 1
+}
 
 // Define a function that takes any person's name and returns it with a smiley :)!
 // Remember to make the name capitalized!
@@ -18,9 +21,12 @@
 // Aiyana | Hi, Aiyana :)
 //
 // TODO: write code below
+function introducePerson(name) {
+  return "Hi, " + name.charAt(0).toUpperCase() + name.slice(1) + " :)"
+}
 
 // TODO: change undefined to be the name of the functions you defined
 module.exports = {
-  a: undefined, // change undefined to be the name of the function you defined to increment a number (the first TODO)
-  b: undefined // change undefined to be the name of the function you defined to say hi (the second TODO)
+  a: incrementNumber, // change undefined to be the name of the function you defined to increment a number (the first TODO)
+  b: introducePerson // change undefined to be the name of the function you defined to say hi (the second TODO)
 }
diff --git a/src/loops/for-loop-and-arrays.js b/src/loops/for-loop-and-arrays.js
index 682995ec..ae8c1e4e 100644
--- a/src/loops/for-loop-and-arrays.js
+++ b/src/loops/for-loop-and-arrays.js
@@ -6,19 +6,33 @@ let word = ''
 // TODO: Add code below this line to make the tests pass
 
 // Use a for loop to set the sum variable to the sum of all the values in nums
-sum = 0
+for (let i = 0; i<nums.length; i++) {
+  sum += nums[i];
+}
 
 // Use a for loop to populate doubledNums with every value from nums array doubled (i.e [2, 6, 24, etc...])
 const doubledNums = []
+for (let i = 0; i < nums.length; i++) {
+doubledNums.push(nums[i]*2);
+}
 
 // Use a for loop to set word equal to all the letters in the letters array
 word = ''
+for (let i = 0; i < letters.length; i++) {
+  word = word + letters[i];
+} 
 
 // Use a for loop to populate everySecondNum with every second number from the nums array
 const everySecondNum = []
+for (let i = 1; i < nums.length; i+=2) {
+  everySecondNum.push(nums[i]);
+}
 
 // Use a for loop to populate numsReversed with the numbers from nums in reverse order
 const numsReversed = []
+for (let i = nums.length -1; i >= 0; i--) {
+  numsReversed.push(nums[i]);
+}
 
 // do not change below this line
 module.exports = {
diff --git a/src/loops/for-loop-basic.js b/src/loops/for-loop-basic.js
index 38a5c971..93f309df 100644
--- a/src/loops/for-loop-basic.js
+++ b/src/loops/for-loop-basic.js
@@ -4,12 +4,26 @@ const evenNums = []
 const countdown = []
 
 // TODO: Write a for loop that adds the numbers 0 to 3 to the numsZeroToThree array
+for (let i = 0; i < 4; i++) {
+  numsZeroToThree.push(i)
+}
 
 // TODO: Write a for loop that adds the numbers 5 to 10 to the numsFiveToTen array
+for (let i = 5; i < 11; i++) {
+  numsFiveToTen.push(i)
+}
 
 // TODO: Write a for loop that adds all the even numbers between 0 and 6 (0, 2, 4, 6) to evenNums
+const numbers = [0, 2, 4, 6];
+for (let i = 0; i < numbers.length; i++) {
+  if (numbers[i] % 2 === 0);
+    evenNums.push(numbers[i]);
+  }
 
 // TODO: Write a for loop that adds the numbers 3 to 0 (in that order) to the countdown array
+for (let i = 3; i >= 0; i--) {
+  countdown.push(i)
+}
 
 // do not change below this line
 module.exports = {
@@ -18,3 +32,5 @@ module.exports = {
   c: evenNums,
   d: countdown
 }
+
+// npx jasmine spec/loops/for-loop-basic.spec.js
\ No newline at end of file
diff --git a/src/variables/assignment.js b/src/variables/assignment.js
index 98f2e31c..50ad35c0 100644
--- a/src/variables/assignment.js
+++ b/src/variables/assignment.js
@@ -3,9 +3,9 @@ let firstNumber = 10
 firstNumber = 0
 
 // TODO: Set the value of firstNumber below so the tests pass
-
+firstNumber = 20
 // TODO: Change the code below so that the tests pass
-const secondNumber = 0 // edit this value
+const secondNumber = 42 // edit this value
 
 // do not edit the exported object.
 module.exports = {
diff --git a/src/variables/declaration.js b/src/variables/declaration.js
index 8afaa55b..aea3da37 100644
--- a/src/variables/declaration.js
+++ b/src/variables/declaration.js
@@ -1,5 +1,8 @@
 //
+let firstName = "Jane"
+console.log(firstName)
 //
+let age = 35
 //
 // TODO: Declare the variables firstName and age so that the tests pass