diff --git a/Sprint-1/errors/0.js b/Sprint-1/errors/0.js
index cf6c5039f..3cd8d38ea 100644
--- a/Sprint-1/errors/0.js
+++ b/Sprint-1/errors/0.js
@@ -1,2 +1,6 @@
-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?
+
+// add comets for Line use //
+/* comments for many lines
+can use */
\ No newline at end of file
diff --git a/Sprint-1/exercises/count.js b/Sprint-1/exercises/count.js
index 117bcb2b6..d71b8f1c3 100644
--- a/Sprint-1/exercises/count.js
+++ b/Sprint-1/exercises/count.js
@@ -1,6 +1,6 @@
 let count = 0;
 
-count = count + 1;
+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
diff --git a/Sprint-2/debug/0.js b/Sprint-2/debug/0.js
index b46d471a8..58dadd2d6 100644
--- a/Sprint-2/debug/0.js
+++ b/Sprint-2/debug/0.js
@@ -1,7 +1,32 @@
 // Predict and explain first...
 
+/*it will  print 
+the first console.log (a * b) which will call the function inputs 10, 32 = 320
 function multiply(a, b) {
   console.log(a * b);
 }
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+
+DEBUG*/
+
+//The result of multiplying 10 and 32 is 320
+
+function multiply(a, b) {
+  return a * b;
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+
+// The function wasn't called initially, so it didn't display the result. 
+// //However, it has now been called and is returning the result.
+
+
+
+
+
+
+
+
+
+
diff --git a/Sprint-2/debug/1.js b/Sprint-2/debug/1.js
index df4020cae..043381039 100644
--- a/Sprint-2/debug/1.js
+++ b/Sprint-2/debug/1.js
@@ -1,8 +1,23 @@
 // Predict and explain first...
 
+/*It will print a error as return is in one line and Javasript will Not
+read any code after that line
+
+
 function sum(a, b) {
   return;
   a + b;
 }
 
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);*/
+
+//FIX://
+
+function sum(a, b) {
+  return a + b;
+}
+
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+
+//The result wasn't returned because the sum of a and b wasn't included.
+//Now I have fixed the code, and it is returning the result
diff --git a/Sprint-2/debug/2.js b/Sprint-2/debug/2.js
index bae9652a8..54ca44edc 100644
--- a/Sprint-2/debug/2.js
+++ b/Sprint-2/debug/2.js
@@ -1,6 +1,34 @@
 // Predict and explain first...
 
-const num = 103;
+//const num = 103;
+
+function getLastDigit(numLast) {
+  return numLast.toString().slice(-1);
+}
+
+console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+console.log(`The last digit of 806 is ${getLastDigit(806)}`);
+
+/* This program should tell the user the last digit of each number.
+ the function doesn’t have a parameter to receive the num variable it’s trying to process. 
+// Explain why getLastDigit is not working properly - correct the problem 
+function getLastDigit() {
+  return num.toString().slice(-1);
+}
+
+console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+console.log(`The last digit of 806 is ${getLastDigit(806)}`);
+
+
+
+function getLastDigit() {
+  return num.toString().slice(-1);
+}*/
+// FIX
+
+/*const num = 103;
 
 function getLastDigit() {
   return num.toString().slice(-1);
@@ -10,5 +38,13 @@ console.log(`The last digit of 42 is ${getLastDigit(42)}`);
 console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
-// This program should tell the user the last digit of each number.
-// Explain why getLastDigit is not working properly - correct the problem
+function getLastDigit() {
+  return num.toString().slice(-1);
+}
+
+gisdellabella@Giss-MBP debug % node 2.js
+The last digit of 42 is 3
+The last digit of 105 is 3
+The last digit of 806 is 3
+42
+gisdellabella@Giss-MBP debug */
\ No newline at end of file
diff --git a/Sprint-2/errors/0.js b/Sprint-2/errors/0.js
index 74640e118..9277c64bb 100644
--- a/Sprint-2/errors/0.js
+++ b/Sprint-2/errors/0.js
@@ -3,7 +3,23 @@
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
-function capitalise(str) {
+/*function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
+
+Error: SyntaxError: Identifier 'str' has already been declared
+
+Fix:*/
+
+function capitalise(capital) {
+  let str = `${capital.toUpperCase()}${capital.slice(1)}`;
+  return str;
+}
+
+console.log(`${capitalise(" change this text to uppercase " )}`);
+
+
+/*gisdellabella@Giss-MBP errors % node 0.js
+ CHANGE THIS TEXT TO UPPERCASE change this text to uppercase 
+gisdellabella@Giss-MBP errors %*/
\ No newline at end of file
diff --git a/Sprint-2/errors/1.js b/Sprint-2/errors/1.js
index 4602ed237..18a9a8372 100644
--- a/Sprint-2/errors/1.js
+++ b/Sprint-2/errors/1.js
@@ -3,11 +3,16 @@
 // Why will an error occur when this program runs?
 // Try playing computer with the example to work out what is going on
 
+ 
 function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
+ 
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
+console.log(0.5);
+
+// const decimalNumber = 0.5;
+// ERROR: SyntaxError: Identifier 'decimalNumber' has already been declared
+
diff --git a/Sprint-2/errors/2.js b/Sprint-2/errors/2.js
index 814334d9e..2742fd7d4 100644
--- a/Sprint-2/errors/2.js
+++ b/Sprint-2/errors/2.js
@@ -1,10 +1,13 @@
 
 // Predict and explain first...
 
-// this function should square any number but instead we're going to get an error
+ function square(num) {
+return num * num;
 
-function square(3) {
-    return num * num;
-}
+ }
+ console.log (square (3))
 
 
+
+//The error was with parameter 3, which always gave me the same result. 
+// By changing it to "num," the function now works with any number. Also 3 is used as the parameter name for the function, which is not valid in JavaScript.
diff --git a/Sprint-2/extend/format-time.js b/Sprint-2/extend/format-time.js
index f3b83062d..5ec03c47b 100644
--- a/Sprint-2/extend/format-time.js
+++ b/Sprint-2/extend/format-time.js
@@ -22,3 +22,52 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+const currentOutput3 = formatAs12HourClock("19:00");
+const targetOutput3 = "7:00 pm";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+
+
+const currentOutput4 = formatAs12HourClock ("03:00");
+const targetOutput4 = "03:00 am";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
+  );
+
+  const currentOutput5 = formatAs12HourClock ("01:00");
+
+  const targetOutput5= "01:00 am";
+
+  console.assert(
+    currentOutput5 === targetOutput5,
+    `curent output: ${currentOutput5}, target output: ${targetOutput5}`
+  )
+
+  const currentOutput6 = formatAs12HourClock ("04:00");
+  const targetOutput6= "04:00 am";
+   console.assert(
+    currentOutput6 === targetOutput6,
+    `curent output: ${currentOutput6}, target output: ${targetOutput6}`
+   )
+
+
+   const currentOutput7 = formatAs12HourClock("22:00")
+   const targetOutput7 = "10:00 pm";
+
+   console.assert(
+    currentOutput7 === targetOutput7,
+    `curent output: ${currentOutput7}, target output: ${targetOutput7}`
+
+   )
+   
+   const currentOutput9 = formatAs12HourClock("00:00")
+   const targetOutput9 = "00:00 am";
+   console.assert(
+   currentOutput9 === targetOutput9,
+    `curent output: ${currentOutput9}, target output: ${targetOutput9}`
+
+   )
\ No newline at end of file
diff --git a/Sprint-2/implement/bmi.js b/Sprint-2/implement/bmi.js
index 259f62d48..28488fee0 100644
--- a/Sprint-2/implement/bmi.js
+++ b/Sprint-2/implement/bmi.js
@@ -13,3 +13,21 @@
 // Given someone's weight in kg and height in metres
 // Then when we call this function with the weight and height
 // It should return their Body Mass Index to 1 decimal place
+
+
+//    const weight = 150;           
+//     const height = 170 / 100; //tranforme centimeter to meter
+
+
+function ibmCalculator( weight, height) {
+    
+    height = height / 100;
+    let calculateIBM = weight / Math.pow(height, 2); 
+    let result = calculateIBM.toFixed(1);       //chang for decimal 
+    return result;
+}
+
+
+console.log(`Your Body Mass Index (BMI) is ${ibmCalculator(98,126)}`);
+
+
diff --git a/Sprint-2/implement/cases.js b/Sprint-2/implement/cases.js
index 9e56a27b6..0395c0f94 100644
--- a/Sprint-2/implement/cases.js
+++ b/Sprint-2/implement/cases.js
@@ -13,3 +13,15 @@
 
 // You will need to come up with an appropriate name for the function
 // Use the string documentation to help you find a solution
+
+
+// my fucntion
+
+function upperSnakeCase(upperCaseTexts) {
+    return upperCaseTexts.toUpperCase().replace(/\s+/g, '_');
+}
+
+console.log(`${upperSnakeCase("hello there")}`);
+
+//gisdellabella@Giss-MBP implement % node cases.js
+// HELLO_THERE
\ No newline at end of file
diff --git a/Sprint-2/implement/to-pounds.js b/Sprint-2/implement/to-pounds.js
index 6265a1a70..96a2282c5 100644
--- a/Sprint-2/implement/to-pounds.js
+++ b/Sprint-2/implement/to-pounds.js
@@ -4,3 +4,57 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+/*function toPounds(penceString) {
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  );
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+}
+const penceString = "399p";
+console.log(`£${pounds}.${pence}`);*/
+
+function toPounds(penceString) {
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  ); // Remove the "p"
+
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); // make sure  number string has at least 3 digits
+
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  ); // Extract pounds and pence
+
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+  return `£${pounds}.${pence}`;
+} // Return the formatted string
+
+const result1 = toPounds("799p");
+const result2 = toPounds("50p");
+const result3 = toPounds("5230p");
+const result4 = toPounds("545p");
+console.log(result1);
+console.log(result2);
+console.log(result3);
+console.log(result4);
+
+gisdellabella@Giss-MBP implement % node to-pounds.js 
+£7.99
+£0.50
+£52.30
+£5.45
\ No newline at end of file
diff --git a/Sprint-2/implement/vat.js b/Sprint-2/implement/vat.js
index 3fb167226..1eec2cde2 100644
--- a/Sprint-2/implement/vat.js
+++ b/Sprint-2/implement/vat.js
@@ -8,3 +8,15 @@
 // Given a number,
 // When I call this function with a number
 // it returns the new price with VAT added on
+
+function addPercentageToPrice(price) {
+  let vat = price * 1.2;
+  return vat;
+}
+
+let price = 675;
+console.log(`Product total price is ${addPercentageToPrice(price)}`);
+
+//let price = 30; Product total price is 36
+//let price = 45; Product total price is 54
+//let price = 45; Product total price is 810
diff --git a/Sprint-2/interpret/myexc2.js b/Sprint-2/interpret/myexc2.js
new file mode 100644
index 000000000..e0735b3b6
--- /dev/null
+++ b/Sprint-2/interpret/myexc2.js
@@ -0,0 +1,50 @@
+/*function formatAs12HourClock() {}
+
+const currentOutput = formatAs12HourClock("08:00");
+const targetOutput = "08:00 am";
+console.assert(
+  currentOutput === targetOutput,
+  `current output: ${currentOutput}, target output: ${targetOutput}`
+);*/
+
+
+/*function formatAs12HourClock(time) {
+  return `${time} am`;
+}
+
+const currentOutput = formatAs12HourClock("09:00");
+const targetOutput = "09:00 am";
+
+console.assert(
+  currentOutput === targetOutput,
+  `current output: ${currentOutput}, target output: ${targetOutput}`
+);*/
+
+function formatAs12HourClock(time) {
+  //time format hh:mm in 24h time
+
+  let hours = time[0] + time[1];
+  let mint = time[3] + time[4]; // not count the colon 
+  hours = parseInt(hours);
+  hours = hours % 12;
+  hours = hours.toString();
+  return hours + ":" + mint ;
+
+
+}
+
+console.log(formatAs12HourClock("15:34"))
+
+
+
+//Console assert practice:
+
+// const currentOutput7 = formatAs12HourClock("22:00")
+//    const targetOutput7 = "10:00 pm";
+
+//    console.assert(
+//     currentOutput7 === targetOutput7,
+//     `curent output: ${currentOutput7}, target output: ${targetOutput7}`
+
+//    )
+
diff --git a/Sprint-2/interpret/time-format.js b/Sprint-2/interpret/time-format.js
index c5a0c1619..06dacb2b3 100644
--- a/Sprint-2/interpret/time-format.js
+++ b/Sprint-2/interpret/time-format.js
@@ -1,17 +1,16 @@
-function pad(num) {
-  return num.toString().padStart(2, "0");
+/*function pad(num) { 
+  return num.toString().padStart(2, "0");// convert to a string  take 2 caracters if short add "0" to the string
 }
 
 function formatTimeDisplay(seconds) {
-  const remainingSeconds = seconds % 60;
-  const totalMinutes = (seconds - remainingSeconds) / 60;
-  const remainingMinutes = totalMinutes % 60;
-  const totalHours = (totalMinutes - remainingMinutes) / 60;
+  //This function converts a time duration (in seconds) into a formatted string in the format "HH:MM:SS" (hours, minutes, seconds).
+  const remainingSeconds = seconds % 60;// Finds the leftover seconds that don’t make up a full minute. % (modulus operator) returns the remainder when seconds is divided by 60.
+  const totalMinutes = seconds - remainingSeconds; //Converts the remaining seconds into full minutes by subtracting remainingSeconds and dividing by 60.
+  const remainingMinutes = totalMinutes % 60; //Converts the remaining seconds into full minutes by subtracting remainingSeconds and dividing by 60.
+  const totalHours = totalMinutes - remainingMinutes;
 
-  return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(
-    remainingSeconds
-  )}`;
-}
+  return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
+} */
 
 // You will need to play computer with this example - use the Python Visualiser https://pythontutor.com/visualize.html#mode=edit
 // to help you answer these questions
@@ -19,13 +18,50 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
+3;
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
+//totalHours = 0 (calculated as (totalMinutes - remainingMinutes) / 60).
+//pad is called first with totalHours.
+// the value assigned to num is 0.
 
 // c) What is the return value of pad is called for the first time?
+//The first call to pad receives num = 0.
+//Inside pad, 0 is converted to a string: "0".
+//.padStart(2, "0") ensures it is at least 2 characters long by adding a leading zero: "00".
+//The return value is "00"
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
+//The last call to pad is for remainingSeconds, which is 1:
+//remainingSeconds = seconds % 60.
+//With seconds = 61, remainingSeconds = 61 % 60 = 1.
+// the value assigned to num is 1
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
+//The last call to pad receives num = 1.
+//Inside pad, 1 is converted to a string: "1".
+//.padStart(2, "0") ensures it is at least 2 characters long by adding a leading zero: "01".
+// return value is "01"
+
+function pad(num) {
+  return num.toString().padStart(2, "0");
+}
+
+function formatTimeDisplay(seconds) {
+  const remainingSeconds = seconds % 60;
+  const totalMinutes = (seconds - remainingSeconds) / 60;
+  const remainingMinutes = totalMinutes % 60;
+  const totalHours = (totalMinutes - remainingMinutes) / 60;
+
+  return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
+}
+
+//console.log(formatTimeDisplay(61));
+//00:01:01
+//gisdellabella@Giss-MBP interpret %
+
+console.log(formatTimeDisplay(52));
+00:00:52
+gisdellabella@Giss-MBP interpret %