From 82b0832617c6c4227671aae0553ce12203ed2391 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 15:16:42 +0100
Subject: [PATCH 01/20] complete count exercise

---
 Sprint-2/1-key-exercises/1-count.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 117bcb2b6..2a4d2fa8c 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -1,6 +1,9 @@
 let count = 0;
+console.log(count);
 
 count = count + 1;
 
+console.log(count);
+
 // 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

From 227a89fab3da0495bba5b8f03e9f78e43ff2affa Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 15:59:08 +0100
Subject: [PATCH 02/20] complete initials exercise

---
 Sprint-2/1-key-exercises/2-initials.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/1-key-exercises/2-initials.js b/Sprint-2/1-key-exercises/2-initials.js
index 964c9563c..8301407d5 100644
--- a/Sprint-2/1-key-exercises/2-initials.js
+++ b/Sprint-2/1-key-exercises/2-initials.js
@@ -5,6 +5,7 @@ const 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.
 
-const initials = ``;
+const initials = (firstName[0] + middleName[0]+ lastName[0]);
+console.log(initials);
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn

From ec8b86e213106176d6f0d660401cfd6763442783 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 17:45:05 +0100
Subject: [PATCH 03/20] complete paths exercise

---
 Sprint-2/1-key-exercises/3-paths.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index ab90ebb28..8ab3ce308 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -17,7 +17,7 @@ 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(0, lastSlashIndex);
+const ext = filePath.slice(filePath.lastIndexOf("."));
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file

From e3fd82bcd13dda9651d7930fbf9623a9b22ddd19 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 18:35:35 +0100
Subject: [PATCH 04/20] complete random number exercise

---
 Sprint-2/1-key-exercises/4-random.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js
index 292f83aab..270f96e30 100644
--- a/Sprint-2/1-key-exercises/4-random.js
+++ b/Sprint-2/1-key-exercises/4-random.js
@@ -2,6 +2,7 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
+console.log(Math.floor(Math.random() * (maximum - minimum + 1))+ minimum);
 
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means

From db7e9d1256cd529f583b341315aa8fb5b5d77ce7 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 18:51:26 +0100
Subject: [PATCH 05/20] complete count and random exercise

---
 Sprint-2/1-key-exercises/1-count.js  | 6 +++---
 Sprint-2/1-key-exercises/4-random.js | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 2a4d2fa8c..d45774fa8 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -1,9 +1,9 @@
 let count = 0;
-console.log(count);
 
 count = count + 1;
 
-console.log(count);
-
 // 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: Adds 1 to count and assigns the result back to count.
+// The = operator assigns the new value to count.
\ No newline at end of file
diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js
index 270f96e30..9bba6f83c 100644
--- a/Sprint-2/1-key-exercises/4-random.js
+++ b/Sprint-2/1-key-exercises/4-random.js
@@ -2,9 +2,11 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
-console.log(Math.floor(Math.random() * (maximum - minimum + 1))+ minimum);
+
 
 // In this exercise, you will need to work out what num represents?
 // 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 represents a random whole number between 1 and 100.
\ No newline at end of file

From 1cca64e894db41facf1cf99c501d00bd7a958603 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 20:41:31 +0100
Subject: [PATCH 06/20] Add comments to instructions

---
 Sprint-2/2-mandatory-errors/0.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/0.js b/Sprint-2/2-mandatory-errors/0.js
index cf6c5039f..65ad3030d 100644
--- a/Sprint-2/2-mandatory-errors/0.js
+++ b/Sprint-2/2-mandatory-errors/0.js
@@ -1,2 +1,2 @@
-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?
\ No newline at end of file

From 38f37a754d9aab03f4b50a30de7190c5d7a7f801 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 21:25:37 +0100
Subject: [PATCH 07/20] Explain const assignment error

---
 Sprint-2/2-mandatory-errors/1.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Sprint-2/2-mandatory-errors/1.js b/Sprint-2/2-mandatory-errors/1.js
index 7a43cbea7..26b415e28 100644
--- a/Sprint-2/2-mandatory-errors/1.js
+++ b/Sprint-2/2-mandatory-errors/1.js
@@ -2,3 +2,6 @@
 
 const age = 33;
 age = age + 1;
+
+// Error: TypeError
+// Why: age was declared with const, so it cannot be reassigned.
\ No newline at end of file

From 2c2e03d830f4b2df5184f2f8ade0ed6620f43d81 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 21:45:51 +0100
Subject: [PATCH 08/20] Explain variable initialization error

---
 Sprint-2/2-mandatory-errors/2.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Sprint-2/2-mandatory-errors/2.js b/Sprint-2/2-mandatory-errors/2.js
index e09b89831..9242fc98d 100644
--- a/Sprint-2/2-mandatory-errors/2.js
+++ b/Sprint-2/2-mandatory-errors/2.js
@@ -3,3 +3,6 @@
 
 console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+
+// Error: ReferenceError: Cannot access 'cityOfBirth' before initialization
+// Why: cityOfBirth is used before it is declared.
\ No newline at end of file

From 92011f6ae326259000de78e9f9e462cdb176ab90 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 22:28:15 +0100
Subject: [PATCH 09/20] Fix card number slice error

---
 Sprint-2/2-mandatory-errors/3.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/2-mandatory-errors/3.js b/Sprint-2/2-mandatory-errors/3.js
index ec101884d..fa6cd09b4 100644
--- a/Sprint-2/2-mandatory-errors/3.js
+++ b/Sprint-2/2-mandatory-errors/3.js
@@ -1,5 +1,6 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = String(cardNumber).slice(-4);
+console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
@@ -7,3 +8,12 @@ const last4Digits = cardNumber.slice(-4);
 // Then run the code and see what error it gives.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
+
+// Prediction: TypeError
+// Why: cardNumber is a number, but slice() is a string method.
+
+// Actual error: TypeError: cardNumber.slice is not a function
+// The prediction was correct.
+
+// Fix: convert cardNumber to a string before using slice.
\ No newline at end of file

From 923135aed88c541a6bb67e483a069e7feacd50e2 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Thu, 17 Sep 2026 22:50:56 +0100
Subject: [PATCH 10/20] Fix invalid variable names

---
 Sprint-2/2-mandatory-errors/4.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js
index 5f86c730b..e04f52b2d 100644
--- a/Sprint-2/2-mandatory-errors/4.js
+++ b/Sprint-2/2-mandatory-errors/4.js
@@ -1,2 +1,6 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const Hour12ClockTime = "8:53pm";
+const hour24ClockTime = "20:53";
+console.log(Hour12ClockTime + " " + hour24ClockTime);
+
+// Error: SyntaxError: Invalid or unexpected token
+// Why: A JavaScript variable name cannot start with a number.
\ No newline at end of file

From a5e6cba2d1ba5da0d857cce5b1e8d40b7198e1b0 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Fri, 18 Sep 2026 12:10:01 +0100
Subject: [PATCH 11/20] Fix percentage change exercise

---
 .../1-percentage-change.js                    | 25 ++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/3-mandatory-interpret/1-percentage-change.js b/Sprint-2/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e1..a749d73ba 100644
--- a/Sprint-2/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-2/3-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;
@@ -13,10 +13,33 @@ console.log(`The percentage change is ${percentageChange}`);
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
 
+// 5 function calls
+// carPrice = Number(carPrice.replaceAll(",", ""));
+// priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+// console.log(`The percentage change is ${percentageChange}`);
+
 // 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?
 
+// Error: SyntaxError: missing ) after argument list
+// The error comes from:
+// priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+// Why: The comma between the two arguments of replaceAll() is missing.
+// Fix: Add the missing comma:
+// priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+
+
 // c) Identify all the lines that are variable reassignment statements
 
+// carPrice = Number(carPrice.replaceAll(",", ""));
+// priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+
 // d) Identify all the lines that are variable declarations
 
+// let carPrice = "10,000";
+// let priceAfterOneYear = "8,543";
+// const priceDifference = carPrice - priceAfterOneYear;
+// const percentageChange = (priceDifference / carPrice) * 100;
+
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+
+// It removes the comma from the string and converts the resulting string into a number.
\ No newline at end of file

From bf8cbcb037e6624aec6fb928adf7b2ca2a35ba92 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Fri, 18 Sep 2026 17:09:14 +0100
Subject: [PATCH 12/20] Implement movie duration calculation

---
 Sprint-2/3-mandatory-interpret/2-time-format.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js
index 47d239558..8e7f008c1 100644
--- a/Sprint-2/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-2/3-mandatory-interpret/2-time-format.js
@@ -1,4 +1,4 @@
-const movieLength = 8784; // length of movie in seconds
+const movieLength = 8788; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -12,14 +12,25 @@ 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?
+// a) 6 variable declarations
 
 // b) How many function calls are there?
+// b) 1 function call
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
 
+// c) % gives the remainder after division.
+// movieLength % 60 finds the remaining seconds after dividing the movie length by 60.
+
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+// d) totalMinutes is assigned the value 146 after subtracting the remaining seconds
+// from movieLength and dividing the result by 60
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+// e) It creates the movie's time format
+// Maybe a more descriptive movieTime or movieDuration
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+// f) The code works for different whole-number values of movieLength
+// the result changes depending on the movie's length
\ No newline at end of file

From 68ca43b1ad61f8c34673f2e6af14a29be178cf37 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Fri, 18 Sep 2026 18:41:12 +0100
Subject: [PATCH 13/20] Implement pence to pounds conversion

---
 Sprint-2/3-mandatory-interpret/3-to-pounds.js | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69..a1e03b188 100644
--- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
@@ -25,3 +25,23 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+
+
+// 1. const penceString = "399p"
+// Initialises a string variable with the value "399p"
+
+// 2. penceString.substring(0, penceString.length - 1)
+// Removes the final "p", leaving "399"
+
+// 3. penceStringWithoutTrailingP.padStart(3, "0")
+// Makes the string 3 characters long by adding "0" at the beginning if needed.
+
+// 4. paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2)
+// Takes everything except the final two characters to get the pounds
+
+// 5. paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0")
+// Takes the final two characters to get the pence and adds "0" at the end if needed
+
+// 6. console.log(`£${pounds}.${pence}`)
+// Displays the price in pounds and pence, such as £3.99
+

From 588ca6b8f0cbd06a455a6f412ac80108a3eba456 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Fri, 18 Sep 2026 20:42:38 +0100
Subject: [PATCH 14/20] Explore browser JavaScript functions

---
 Sprint-2/4-stretch-explore/chrome.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Sprint-2/4-stretch-explore/chrome.md b/Sprint-2/4-stretch-explore/chrome.md
index 962580b82..a13c5f9d2 100644
--- a/Sprint-2/4-stretch-explore/chrome.md
+++ b/Sprint-2/4-stretch-explore/chrome.md
@@ -8,8 +8,12 @@ Let's try an example.
 In the Chrome console, invoke the function `alert` with one argument, the string `"Hello world!"`;
 
 What effect does calling the `alert` function have?
+<!-- alert() displays a message in a popup -->
 
 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`?
+
+<!-- prompt() displays a question/input box -->
+<!-- The return value of prompt() is the user's input as a string -->
\ No newline at end of file

From 491dfc75b8a86a58019a1ffb47dfdd10a1fafa0c Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Fri, 18 Sep 2026 21:03:38 +0100
Subject: [PATCH 15/20] Explore JavaScript objects

---
 Sprint-2/4-stretch-explore/objects.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Sprint-2/4-stretch-explore/objects.md b/Sprint-2/4-stretch-explore/objects.md
index 0216dee56..d751c9323 100644
--- a/Sprint-2/4-stretch-explore/objects.md
+++ b/Sprint-2/4-stretch-explore/objects.md
@@ -5,8 +5,10 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
+<!-- ƒ log() { [native code] } -->
 
 Now enter just `console` in the Console, what output do you get back?
+<!-- console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …} -->
 
 Try also entering `typeof console`
 
@@ -14,3 +16,6 @@ Answer the following questions:
 
 What does `console` store?
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+
+<!-- Console stores an object containing functions such as {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …} -->
+<!-- The '.' is used to access properties or functions inside an object -->
\ No newline at end of file

From caf0ecd86732d30b3db07866be1e5165fa0448dd Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Sun, 20 Sep 2026 18:45:22 +0100
Subject: [PATCH 16/20] Fix age reassignment error

---
 Sprint-2/2-mandatory-errors/1.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/1.js b/Sprint-2/2-mandatory-errors/1.js
index 26b415e28..ddd0f7208 100644
--- a/Sprint-2/2-mandatory-errors/1.js
+++ b/Sprint-2/2-mandatory-errors/1.js
@@ -1,7 +1,9 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
+console.log(age);
 
 // Error: TypeError
-// Why: age was declared with const, so it cannot be reassigned.
\ No newline at end of file
+// Why: Assignment to constant variable.
+// Fix: Changed const to let, which allows the variable to be reassigned.
\ No newline at end of file

From b2957b1d4008d770f2d69c460eff760692f30c33 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Sun, 20 Sep 2026 19:11:55 +0100
Subject: [PATCH 17/20] Fix variable initialization error

---
 Sprint-2/2-mandatory-errors/2.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/2.js b/Sprint-2/2-mandatory-errors/2.js
index 9242fc98d..d96b0a35d 100644
--- a/Sprint-2/2-mandatory-errors/2.js
+++ b/Sprint-2/2-mandatory-errors/2.js
@@ -1,8 +1,10 @@
 // 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}`);
+
 
-// Error: ReferenceError: Cannot access 'cityOfBirth' before initialization
-// Why: cityOfBirth is used before it is declared.
\ No newline at end of file
+// Error: ReferenceError: 
+// Why: Cannot access 'cityOfBirth' before initialization
+// Fix: Declare the const before using it
\ No newline at end of file

From c7309cf9968209e2b2053c933c1afda0e081eb09 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Sun, 20 Sep 2026 20:05:35 +0100
Subject: [PATCH 18/20] Explain random number generation

---
 Sprint-2/1-key-exercises/4-random.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js
index 9bba6f83c..cec375575 100644
--- a/Sprint-2/1-key-exercises/4-random.js
+++ b/Sprint-2/1-key-exercises/4-random.js
@@ -2,11 +2,14 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
-
+console.log(num);
 
 // In this exercise, you will need to work out what num represents?
 // 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 represents a random whole number between 1 and 100.
\ No newline at end of file
+// Math.floor() rounds down to a whole number instead of rounding up
+// Math.random() gives a random decimal 
+
+//num represents a random whole number between 1 and 100.

From 02966a9643be6558f1dcfab198f977619cb0c410 Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Sun, 20 Sep 2026 20:45:34 +0100
Subject: [PATCH 19/20] complete movie time interpretation

---
 Sprint-2/3-mandatory-interpret/2-time-format.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js
index 8e7f008c1..9bdd8aae9 100644
--- a/Sprint-2/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-2/3-mandatory-interpret/2-time-format.js
@@ -1,4 +1,4 @@
-const movieLength = 8788; // length of movie in seconds
+const movieLength = 59; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -24,7 +24,7 @@ console.log(result);
 // movieLength % 60 finds the remaining seconds after dividing the movie length by 60.
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
-// d) totalMinutes is assigned the value 146 after subtracting the remaining seconds
+// d) totalMinutes is assigned the value 0 after subtracting the remaining seconds
 // from movieLength and dividing the result by 60
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
@@ -32,5 +32,6 @@ console.log(result);
 // Maybe a more descriptive movieTime or movieDuration
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
-// f) The code works for different whole-number values of movieLength
-// the result changes depending on the movie's length
\ No newline at end of file
+// f) The code does not work correctly for all values of movieLength
+// It works correctly for non-negative whole numbers, but negative numbers and
+// decimal values can produce an invalid time format.
\ No newline at end of file

From 5ec9103e387c5d973971e834bddad60b5db5f9ae Mon Sep 17 00:00:00 2001
From: Frumentius-Rev <tesfaybh@gmail.com>
Date: Sun, 20 Sep 2026 21:01:54 +0100
Subject: [PATCH 20/20] Format Sprint 2 with Prettier

---
 Sprint-2/1-key-exercises/1-count.js                   | 2 +-
 Sprint-2/1-key-exercises/2-initials.js                | 2 +-
 Sprint-2/1-key-exercises/3-paths.js                   | 2 +-
 Sprint-2/1-key-exercises/4-random.js                  | 2 +-
 Sprint-2/2-mandatory-errors/0.js                      | 2 +-
 Sprint-2/2-mandatory-errors/1.js                      | 2 +-
 Sprint-2/2-mandatory-errors/2.js                      | 5 ++---
 Sprint-2/2-mandatory-errors/3.js                      | 3 +--
 Sprint-2/2-mandatory-errors/4.js                      | 2 +-
 Sprint-2/3-mandatory-interpret/1-percentage-change.js | 3 +--
 Sprint-2/3-mandatory-interpret/2-time-format.js       | 2 +-
 Sprint-2/3-mandatory-interpret/3-to-pounds.js         | 6 ++----
 Sprint-2/4-stretch-explore/chrome.md                  | 2 +-
 Sprint-2/4-stretch-explore/objects.md                 | 2 +-
 Sprint-2/README.md                                    | 4 ++--
 15 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index d45774fa8..ae25d521c 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -6,4 +6,4 @@ count = count + 1;
 // Describe what line 3 is doing, in particular focus on what = is doing
 
 // Line 3: Adds 1 to count and assigns the result back to count.
-// The = operator assigns the new value to count.
\ No newline at end of file
+// The = operator assigns the new value to count.
diff --git a/Sprint-2/1-key-exercises/2-initials.js b/Sprint-2/1-key-exercises/2-initials.js
index 8301407d5..5829ed2eb 100644
--- a/Sprint-2/1-key-exercises/2-initials.js
+++ b/Sprint-2/1-key-exercises/2-initials.js
@@ -5,7 +5,7 @@ const 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.
 
-const initials = (firstName[0] + middleName[0]+ lastName[0]);
+const initials = firstName[0] + middleName[0] + lastName[0];
 console.log(initials);
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index 8ab3ce308..b0c534dca 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -20,4 +20,4 @@ console.log(`The base part of ${filePath} is ${base}`);
 const dir = filePath.slice(0, lastSlashIndex);
 const ext = filePath.slice(filePath.lastIndexOf("."));
 
-// https://www.google.com/search?q=slice+mdn
\ No newline at end of file
+// https://www.google.com/search?q=slice+mdn
diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js
index cec375575..d01c1f213 100644
--- a/Sprint-2/1-key-exercises/4-random.js
+++ b/Sprint-2/1-key-exercises/4-random.js
@@ -10,6 +10,6 @@ console.log(num);
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
 
 // Math.floor() rounds down to a whole number instead of rounding up
-// Math.random() gives a random decimal 
+// Math.random() gives a random decimal
 
 //num represents a random whole number between 1 and 100.
diff --git a/Sprint-2/2-mandatory-errors/0.js b/Sprint-2/2-mandatory-errors/0.js
index 65ad3030d..e6b744a05 100644
--- a/Sprint-2/2-mandatory-errors/0.js
+++ b/Sprint-2/2-mandatory-errors/0.js
@@ -1,2 +1,2 @@
 //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
+//We don't want the computer to run these 2 lines - how can we solve this problem?
diff --git a/Sprint-2/2-mandatory-errors/1.js b/Sprint-2/2-mandatory-errors/1.js
index ddd0f7208..96e06847e 100644
--- a/Sprint-2/2-mandatory-errors/1.js
+++ b/Sprint-2/2-mandatory-errors/1.js
@@ -6,4 +6,4 @@ console.log(age);
 
 // Error: TypeError
 // Why: Assignment to constant variable.
-// Fix: Changed const to let, which allows the variable to be reassigned.
\ No newline at end of file
+// Fix: Changed const to let, which allows the variable to be reassigned.
diff --git a/Sprint-2/2-mandatory-errors/2.js b/Sprint-2/2-mandatory-errors/2.js
index d96b0a35d..65bc9e0aa 100644
--- a/Sprint-2/2-mandatory-errors/2.js
+++ b/Sprint-2/2-mandatory-errors/2.js
@@ -4,7 +4,6 @@
 const cityOfBirth = "Bolton";
 console.log(`I was born in ${cityOfBirth}`);
 
-
-// Error: ReferenceError: 
+// Error: ReferenceError:
 // Why: Cannot access 'cityOfBirth' before initialization
-// Fix: Declare the const before using it
\ No newline at end of file
+// Fix: Declare the const before using it
diff --git a/Sprint-2/2-mandatory-errors/3.js b/Sprint-2/2-mandatory-errors/3.js
index fa6cd09b4..8cad074c5 100644
--- a/Sprint-2/2-mandatory-errors/3.js
+++ b/Sprint-2/2-mandatory-errors/3.js
@@ -9,11 +9,10 @@ console.log(last4Digits);
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
 
-
 // Prediction: TypeError
 // Why: cardNumber is a number, but slice() is a string method.
 
 // Actual error: TypeError: cardNumber.slice is not a function
 // The prediction was correct.
 
-// Fix: convert cardNumber to a string before using slice.
\ No newline at end of file
+// Fix: convert cardNumber to a string before using slice.
diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js
index e04f52b2d..b2f3a5001 100644
--- a/Sprint-2/2-mandatory-errors/4.js
+++ b/Sprint-2/2-mandatory-errors/4.js
@@ -3,4 +3,4 @@ const hour24ClockTime = "20:53";
 console.log(Hour12ClockTime + " " + hour24ClockTime);
 
 // Error: SyntaxError: Invalid or unexpected token
-// Why: A JavaScript variable name cannot start with a number.
\ No newline at end of file
+// Why: A JavaScript variable name cannot start with a number.
diff --git a/Sprint-2/3-mandatory-interpret/1-percentage-change.js b/Sprint-2/3-mandatory-interpret/1-percentage-change.js
index a749d73ba..03b86e4f9 100644
--- a/Sprint-2/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-2/3-mandatory-interpret/1-percentage-change.js
@@ -27,7 +27,6 @@ console.log(`The percentage change is ${percentageChange}`);
 // Fix: Add the missing comma:
 // priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
-
 // c) Identify all the lines that are variable reassignment statements
 
 // carPrice = Number(carPrice.replaceAll(",", ""));
@@ -42,4 +41,4 @@ console.log(`The percentage change is ${percentageChange}`);
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
 
-// It removes the comma from the string and converts the resulting string into a number.
\ No newline at end of file
+// It removes the comma from the string and converts the resulting string into a number.
diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js
index 9bdd8aae9..284c64919 100644
--- a/Sprint-2/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-2/3-mandatory-interpret/2-time-format.js
@@ -34,4 +34,4 @@ console.log(result);
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
 // f) The code does not work correctly for all values of movieLength
 // It works correctly for non-negative whole numbers, but negative numbers and
-// decimal values can produce an invalid time format.
\ No newline at end of file
+// decimal values can produce an invalid time format.
diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
index a1e03b188..a956cbd89 100644
--- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
@@ -2,13 +2,13 @@ const penceString = "399p";
 
 const penceStringWithoutTrailingP = penceString.substring(
   0,
-  penceString.length - 1
+  penceString.length - 1,
 );
 
 const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
 const pounds = paddedPenceNumberString.substring(
   0,
-  paddedPenceNumberString.length - 2
+  paddedPenceNumberString.length - 2,
 );
 
 const pence = paddedPenceNumberString
@@ -26,7 +26,6 @@ console.log(`£${pounds}.${pence}`);
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
 
-
 // 1. const penceString = "399p"
 // Initialises a string variable with the value "399p"
 
@@ -44,4 +43,3 @@ console.log(`£${pounds}.${pence}`);
 
 // 6. console.log(`£${pounds}.${pence}`)
 // Displays the price in pounds and pence, such as £3.99
-
diff --git a/Sprint-2/4-stretch-explore/chrome.md b/Sprint-2/4-stretch-explore/chrome.md
index a13c5f9d2..02ef34d7d 100644
--- a/Sprint-2/4-stretch-explore/chrome.md
+++ b/Sprint-2/4-stretch-explore/chrome.md
@@ -16,4 +16,4 @@ What effect does calling the `prompt` function have?
 What is the return value of `prompt`?
 
 <!-- prompt() displays a question/input box -->
-<!-- The return value of prompt() is the user's input as a string -->
\ No newline at end of file
+<!-- The return value of prompt() is the user's input as a string -->
diff --git a/Sprint-2/4-stretch-explore/objects.md b/Sprint-2/4-stretch-explore/objects.md
index d751c9323..6086f991b 100644
--- a/Sprint-2/4-stretch-explore/objects.md
+++ b/Sprint-2/4-stretch-explore/objects.md
@@ -18,4 +18,4 @@ What does `console` store?
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
 
 <!-- Console stores an object containing functions such as {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …} -->
-<!-- The '.' is used to access properties or functions inside an object -->
\ No newline at end of file
+<!-- The '.' is used to access properties or functions inside an object -->
diff --git a/Sprint-2/README.md b/Sprint-2/README.md
index a47afc540..d77309976 100644
--- a/Sprint-2/README.md
+++ b/Sprint-2/README.md
@@ -12,7 +12,7 @@ This README will guide you through the different sections for this week.
 
 ## 1 Exercises
 
-In this section, you'll have a short program and task. Some of the syntax may be unfamiliar - in this case, you'll need to look things up in documentation. 
+In this section, you'll have a short program and task. Some of the syntax may be unfamiliar - in this case, you'll need to look things up in documentation.
 
 https://developer.mozilla.org/en-US/docs/Web/JavaScript
 
@@ -28,7 +28,7 @@ You must use documentation to make sense of anything unfamiliar - learning how t
 
 You can also use `console.log` to check the value of different variables in the code.
 
-https://developer.mozilla.org/en-US/docs/Web/JavaScript 
+https://developer.mozilla.org/en-US/docs/Web/JavaScript
 
 ## 4 Explore - Stretch 💪