diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 117bcb2b6e..b66130b68c 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,3 +4,6 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+
+// Line 3, we reassign a new value to the count variable,
+// the new value is count plus 1.
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 47561f6175..4208dd491d 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,7 +5,9 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ``;
+let initials = `${firstName.charAt(0)}${middleName.charAt(0)}${lastName.charAt(0)}`;
+console.log(initials);
+
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index ab90ebb28e..af54a46c88 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -16,8 +16,8 @@ console.log(`The base part of ${filePath} is ${base}`);
 
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
-
-const dir = ;
-const ext = ;
+const dir = filePath.slice(1, 16);
+const ext = filePath.slice(-4);
+console.log(`The base part of ${dir} is ${ext}`);
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index 292f83aabb..3b036de090 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -4,6 +4,13 @@ const maximum = 100;
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
 // In this exercise, you will need to work out what num represents?
+console.log(Math.random())
+console.log(num);
 // Try breaking down the expression and using documentation to explain what it means
+
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+// num = Math.floor which will remove all the numbers after the decimal point 
+// (Math.random that will generate a random decimal number 
+// which will be times with the value of maximum - minimum + 1 + minimum ) 
+// which is 100 * the Math.random generated
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index cf6c5039f7..b20b93bdf3 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,2 +1,3 @@
-This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
+//This is just an instruction for the first activity - but it is just for human consumption
+//We don't want the computer to run these 2 lines - how can we solve this problem?
+// need to use pseudo code 
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index 7a43cbea76..454982dce3 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -1,4 +1,5 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
+// const variable cannot reassign the value - we need to use let
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index e09b89831d..8cad5c7a84 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,5 +1,8 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
+
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+
+// the variable cityOfBirth was after the console log which means you cannot log before you actually have the variable
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index ec101884db..2e64e40224 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,9 +1,14 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";
 const last4Digits = cardNumber.slice(-4);
+console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
 // Then run the code and see what error it gives.
+//const last4Digits = cardNumber.slice(-4);
+                               
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+// The error comes up cause the value of the cardNumber is not a string it's a number
+//Once you change the value to a string the .slice()
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index 5f86c730bc..b43d98c8d0 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,2 +1,4 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const  twelveHourClockTime = "8:53pm";
+const  twentyFourHourClockTime = "20:53";
+
+//we cannot start a variable name with a number
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e18..088fd26d08 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,16 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+// there is 5 calls: 2* Number() 2* .replaceAll() AND 1* .log()
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// line 5 missing a comma: .replaceAll("," "")
 
 // c) Identify all the lines that are variable reassignment statements
+// line 4 carPrice and line 5 priceAfterOneYear
 
 // d) Identify all the lines that are variable declarations
+// line 1 carPrice and line 2 priceAfterOneYear 
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+//the Number() function converts the string value into number - however we cannot convert comma we would need to replace this with the .replaceAll() method
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index 47d2395587..9cce818eb7 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -1,4 +1,6 @@
-const movieLength = 8784; // length of movie in seconds
+let movieLength = 8784; // length of movie in seconds
+movieLength = 9000;
+movieLength = 6500;
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -11,15 +13,23 @@ console.log(result);
 
 // For the piece of code above, read the code and then answer the following questions
 
+
 // a) How many variable declarations are there in this program?
+// there is 6 variable declaration
 
 // b) How many function calls are there?
+// there is only the log() call
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+// the logic is to calculate the movieLength remainder - operator returns the remainder left over when one operand is divided by a second operand. 
+// It always takes the sign of the dividend.
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+// to calculate the movie length into minutes
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+// the result represent the movie length - hours minutes and second in a string - movieTime
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+// Yes - the above logic calculates the movie length in hours minutes and seconds 
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69a..370ef4765e 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -25,3 +25,22 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+//
+// 3.const penceStringWithoutTrailingP = penceString.substring(
+//  0,
+//  penceString.length - 1
+// ); assigned the string to a new variable with out the P - by using the substring method - the .length will count the number of the characters and only display 1 before last
+//
+// 8. const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); 
+// using the pedStart method we ensure to fill the gas - we can add 0 on this occasion to our string beginning the the number of length does not match with 3 characters - fill in the gaps
+// 9. const pounds = paddedPenceNumberString.substring(
+//  0,
+// paddedPenceNumberString.length - 2
+//); again we create a new variable to only store the first character of the string 
+//  
+// 14. const pence = paddedPenceNumberString
+//  .substring(paddedPenceNumberString.length - 2)
+//  .padEnd(2, "0");
+// creating a new variable to assign only the last two character of the string - we also use the padEnd method to fill the end gaps with zeros
+//
+// 18. we call the newly created variables with consol.log to display this as a new string on the console
\ No newline at end of file
diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md
index e7dd5feafe..542c4654e5 100644
--- a/Sprint-1/4-stretch-explore/chrome.md
+++ b/Sprint-1/4-stretch-explore/chrome.md
@@ -10,9 +10,10 @@ Let's try an example.
 In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
 
-What effect does calling the `alert` function have?
+What effect does calling the `alert` function have? - alert is a pop up display message with an OK button - you can close once you click on the OK button 
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
-What effect does calling the `prompt` function have?
-What is the return value of `prompt`?
+What effect does calling the `prompt` function have? - the prompt will also display a message usually question  - however this time you will have an empty field to enter the value or answer - a cancel and a OK button
+
+What is the return value of `prompt`? - whatever the user inputs into the empty field
\ No newline at end of file
diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md
index 0216dee56a..4c2ca05d1e 100644
--- a/Sprint-1/4-stretch-explore/objects.md
+++ b/Sprint-1/4-stretch-explore/objects.md
@@ -12,5 +12,12 @@ Try also entering `typeof console`
 
 Answer the following questions:
 
-What does `console` store?
-What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+What does `console` store? - is an object of properies of methods 
+
+What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean? 
+
+* console.log() is call and display something on the terminal/console 
+* console.assert()  checks if the condition is True or False 
+* the . is also called the dot notation - access something that belongs to an object - method is a function that stores inside a function
+
+