From 4ad25d3ec3cb218b2efd5064657a5ffcc77ce3ff Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:19:50 +0100
Subject: [PATCH 01/18] Restore prep work for Sprint 2

---
 prep/facts.js          | 1 +
 prep/greeting.js       | 1 +
 prep/hello_world.js    | 1 +
 prep/user interface.md | 8 ++++++++
 4 files changed, 11 insertions(+)
 create mode 100644 prep/facts.js
 create mode 100644 prep/greeting.js
 create mode 100644 prep/hello_world.js
 create mode 100644 prep/user interface.md

diff --git a/prep/facts.js b/prep/facts.js
new file mode 100644
index 000000000..06734df4e
--- /dev/null
+++ b/prep/facts.js
@@ -0,0 +1 @@
+console.log("I live in Sheffield.")
diff --git a/prep/greeting.js b/prep/greeting.js
new file mode 100644
index 000000000..b36b78b87
--- /dev/null
+++ b/prep/greeting.js
@@ -0,0 +1 @@
+const greeting = "Hello there";
diff --git a/prep/hello_world.js b/prep/hello_world.js
new file mode 100644
index 000000000..422c89ef9
--- /dev/null
+++ b/prep/hello_world.js
@@ -0,0 +1 @@
+console.log("Hello, World!")
diff --git a/prep/user interface.md b/prep/user interface.md
new file mode 100644
index 000000000..b20168aa6
--- /dev/null
+++ b/prep/user interface.md	
@@ -0,0 +1,8 @@
+| Device        | User interface                        |
+| ------------- | ------------------------------------- |
+| 🧮 Calculator | Buttons and display                   |
+| 📱 Microwave  | Buttons, display and sounds           |
+| 💡 Lamp       | Switch or button                      |
+| 👍 Facebook   | Screen, buttons, menus and text boxes |
+| 🗣️ Alexa     | Mainly your voice, plus buttons/app   |
+| 💬 ChatGPT    | Chat box, buttons, menus and screen   |

From cbfb18131f299811b5ec71c474591c5d05820aac Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:29:47 +0100
Subject: [PATCH 02/18] Complete count exercise

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

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 117bcb2b6..32e8be782 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -1,6 +1,7 @@
 let count = 0;
 
 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 40cbf97525ed43d83e7b23013f103566b45d929d Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:29:55 +0100
Subject: [PATCH 03/18] 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..804978abd 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 52f345105bcfcce10050cb695c0fba36fc781bdd Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:02 +0100
Subject: [PATCH 04/18] Complete paths exercise

---
 Sprint-2/1-key-exercises/3-paths.js | 5 +++--
 1 file changed, 3 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..43eddfd46 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -17,7 +17,8 @@ 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(0, lastSlashIndex);
+const ext = filePath.slice(filePath.lastIndexOf(".") + 1);
+console.log({ dir, ext });
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file

From c05aa8569d3e41c2a01b8ce71ee95a403917e6f6 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:10 +0100
Subject: [PATCH 05/18] 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..644752d31 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(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

From 05cb7b5b180788c570d90f7a32bfde96107f41ae Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:19 +0100
Subject: [PATCH 06/18] Document error explanation example

---
 Sprint-2/2-mandatory-errors/0.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/0.js b/Sprint-2/2-mandatory-errors/0.js
index cf6c5039f..214eb7cc7 100644
--- a/Sprint-2/2-mandatory-errors/0.js
+++ b/Sprint-2/2-mandatory-errors/0.js
@@ -1,2 +1,7 @@
-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 only for human consumption.
+// We don't want the computer to run these 2 lines - how can we solve this problem?
+//
+// To stop JavaScript from running them, turn them into comments:
+//
+// const age = 33;
+// age = age + 1;

From 2edba649fe35b9e76b5a1fc70e6f5ae8f47a938e Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:31 +0100
Subject: [PATCH 07/18] Fix reassignment error

---
 Sprint-2/2-mandatory-errors/1.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/2-mandatory-errors/1.js b/Sprint-2/2-mandatory-errors/1.js
index 7a43cbea7..4a89a12a3 100644
--- a/Sprint-2/2-mandatory-errors/1.js
+++ b/Sprint-2/2-mandatory-errors/1.js
@@ -1,4 +1,6 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
+// Use let instead of const so the value can be reassigned.
 age = age + 1;
+console.log(age);

From 0fc07717e6272f70eb6dca9eb0d5a95539af9bfe Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:40 +0100
Subject: [PATCH 08/18] Fix city declaration error

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

diff --git a/Sprint-2/2-mandatory-errors/2.js b/Sprint-2/2-mandatory-errors/2.js
index e09b89831..cf934c587 100644
--- a/Sprint-2/2-mandatory-errors/2.js
+++ b/Sprint-2/2-mandatory-errors/2.js
@@ -1,5 +1,6 @@
 // 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";
+// Declare the variable before using it in the template literal.
+console.log(`I was born in ${cityOfBirth}`);

From 80bc588ff507fc57feeb464abbfc1b7679b5d69f Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:48 +0100
Subject: [PATCH 09/18] Fix card number slicing error

---
 Sprint-2/2-mandatory-errors/3.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Sprint-2/2-mandatory-errors/3.js b/Sprint-2/2-mandatory-errors/3.js
index ec101884d..08d02e30f 100644
--- a/Sprint-2/2-mandatory-errors/3.js
+++ b/Sprint-2/2-mandatory-errors/3.js
@@ -1,5 +1,7 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+// Convert the number to a string before slicing to get the last four digits.
+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

From f34c0daaa12a521d766610debd9d13a9c2b98040 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:30:55 +0100
Subject: [PATCH 10/18] Fix invalid variable names

---
 Sprint-2/2-mandatory-errors/4.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js
index 5f86c730b..b0ea867af 100644
--- a/Sprint-2/2-mandatory-errors/4.js
+++ b/Sprint-2/2-mandatory-errors/4.js
@@ -1,2 +1,5 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+// Variable names cannot begin with a number, so use descriptive names instead.
+const twelveHourClockTime = "8:53pm";
+const twentyFourHourClockTime = "20:53";
+console.log(twelveHourClockTime);
+console.log(twentyFourHourClockTime);

From 6a1011277cec34bc288a194508cdd6337010b392 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:42:06 +0100
Subject: [PATCH 11/18] Complete percentage change interpretation

---
 .../1-percentage-change.js                     | 18 +++++++++++++++++-
 1 file changed, 17 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..4dac49ada 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;
@@ -12,11 +12,27 @@ 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 are 5 function calls:
+// - line 4: carPrice.replaceAll(",", "")
+// - line 5: priceAfterOneYear.replaceAll(",", "")
+// - line 4: Number(...)
+// - line 5: Number(...)
+// - line 9: console.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?
+// The error occurs at line 5 because the syntax is invalid: replaceAll("," "") is missing a comma between the arguments.
+// Fix it by writing replaceAll(",", "").
 
 // c) Identify all the lines that are variable reassignment statements
+// - line 4: carPrice = Number(...)
+// - line 5: priceAfterOneYear = Number(...)
 
 // d) Identify all the lines that are variable declarations
+// - line 1: let carPrice = "10,000";
+// - line 2: let priceAfterOneYear = "8,543";
+// - line 7: const priceDifference = carPrice - priceAfterOneYear;
+// - line 8: 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 commas from the string, then converts the cleaned string into a number.
+// This is necessary because the prices are stored as strings like "10,000" and "8,543", and we need to perform arithmetic on them.

From 28d1d370ec106a1ce4b02bf959f0615f71a1ea4b Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:42:07 +0100
Subject: [PATCH 12/18] Complete time format interpretation

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

diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js
index 47d239558..c3238c516 100644
--- a/Sprint-2/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-2/3-mandatory-interpret/2-time-format.js
@@ -12,14 +12,26 @@ 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 are 7 variable declarations: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, result, and maybe the console.log has none.
+// (If counting only const declarations, there are 6: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, result.)
 
 // b) How many function calls are there?
+// There is 1 function call: console.log(result)
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
+// % is the remainder operator. It gives the remainder when movieLength is divided by 60.
+// For 8784 seconds, 8784 % 60 = 24, so there are 24 seconds remaining after full minutes are counted.
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+// totalMinutes = (movieLength - remainingSeconds) / 60
+// This removes the extra seconds left over after full minutes are taken out, then divides by 60 to convert the remaining whole seconds into total minutes.
+// For 8784 seconds, this gives 146 minutes.
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+// result represents the time formatted as hours:minutes:seconds.
+// A better name could be timeString or formattedTime.
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+// It works for any non-negative number of seconds, because it calculates hours, minutes, and seconds using division and remainders.
+// It will not format correctly for negative values, and it assumes the value is in seconds rather than another unit.

From dbf28af09fb8d70a303666fb9cfb1008be0e91ec Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:42:08 +0100
Subject: [PATCH 13/18] Complete pounds conversion interpretation

---
 Sprint-2/3-mandatory-interpret/3-to-pounds.js | 8 ++++++++
 1 file changed, 8 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..66333adac 100644
--- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
@@ -25,3 +25,11 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+// 2. penceString.substring(0, penceString.length - 1): removes the final "p" character so only the digits remain
+// 3. padStart(3, "0"): ensures the value has at least 3 characters by adding leading zeros if needed
+// 4. pounds = the first part of the padded string, excluding the last two digits, so the whole pounds part is preserved
+// 5. pence = the final two digits, padded to 2 characters, to keep a valid pence value
+// 6. console.log(`£${pounds}.${pence}`): prints the formatted result as a pounds and pence string
+
+// For "399p", the steps work like this:
+// "399p" -> "399" -> "399" -> pounds = "3" and pence = "99" -> output "£3.99"

From 4b2b429684645720d2a2b8e04ea23dc682d5ecf9 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:42:08 +0100
Subject: [PATCH 14/18] Complete objects stretch task

---
 Sprint-2/4-stretch-explore/objects.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Sprint-2/4-stretch-explore/objects.md b/Sprint-2/4-stretch-explore/objects.md
index 0216dee56..78a51d8c9 100644
--- a/Sprint-2/4-stretch-explore/objects.md
+++ b/Sprint-2/4-stretch-explore/objects.md
@@ -13,4 +13,11 @@ Try also entering `typeof console`
 Answer the following questions:
 
 What does `console` store?
+`console` stores the browser's debugging object. It contains methods such as `log`, `error`, `warn`, and `assert` that let us print values and inspect program state.
+
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+The `.` is the property access operator. It means "look inside the `console` object and use the `log` or `assert` method stored there".
+So `console.log(...)` means “call the `log` method on the `console` object”.
+
+Try also entering `typeof console`.
+This returns `"object"`, because `console` is an object containing methods.

From 0e5b329d73dbd12772b99fed51cc23302f1674c4 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 14:42:09 +0100
Subject: [PATCH 15/18] Complete Chrome console stretch task

---
 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..ec410d2f4 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?
+It shows a pop-up dialog box with the message "Hello world!" and pauses the browser until the user closes it.
 
 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?
+It displays a dialog box asking the user for input.
+
 What is the return value of `prompt`?
+The return value is the text entered by the user as a string. If the user cancels the prompt, it returns `null`.

From 820cbc8514d7c2674dd649425d56d06acf5bfb41 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 15:24:14 +0100
Subject: [PATCH 16/18] Add count exercise explanation

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

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 32e8be782..aef978c77 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -4,4 +4,6 @@ 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 is using the assignment operator (=) to update the value of count.
+// It reads the current value of count, adds 1 to it, and then stores the result back into count.
+// So the value changes from 0 to 1.

From b93c32ab59725eaa0c976fe64ef11cd34ebf891b Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 15:33:56 +0100
Subject: [PATCH 17/18] Correct time format interpretation count

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

diff --git a/Sprint-2/3-mandatory-interpret/2-time-format.js b/Sprint-2/3-mandatory-interpret/2-time-format.js
index c3238c516..45134753d 100644
--- a/Sprint-2/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-2/3-mandatory-interpret/2-time-format.js
@@ -12,8 +12,7 @@ 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 are 7 variable declarations: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, result, and maybe the console.log has none.
-// (If counting only const declarations, there are 6: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, result.)
+// There are 6 variable declarations: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, and result.
 
 // b) How many function calls are there?
 // There is 1 function call: console.log(result)

From 440a54b20b48fe39f2a5572116e2459acf0763c3 Mon Sep 17 00:00:00 2001
From: BrianY315 <yorachibrian@gmail.com>
Date: Mon, 21 Sep 2026 16:12:39 +0100
Subject: [PATCH 18/18] Remove stray prep files from Sprint 2 branch

---
 prep/facts.js          | 1 -
 prep/greeting.js       | 1 -
 prep/hello_world.js    | 1 -
 prep/user interface.md | 8 --------
 4 files changed, 11 deletions(-)
 delete mode 100644 prep/facts.js
 delete mode 100644 prep/greeting.js
 delete mode 100644 prep/hello_world.js
 delete mode 100644 prep/user interface.md

diff --git a/prep/facts.js b/prep/facts.js
deleted file mode 100644
index 06734df4e..000000000
--- a/prep/facts.js
+++ /dev/null
@@ -1 +0,0 @@
-console.log("I live in Sheffield.")
diff --git a/prep/greeting.js b/prep/greeting.js
deleted file mode 100644
index b36b78b87..000000000
--- a/prep/greeting.js
+++ /dev/null
@@ -1 +0,0 @@
-const greeting = "Hello there";
diff --git a/prep/hello_world.js b/prep/hello_world.js
deleted file mode 100644
index 422c89ef9..000000000
--- a/prep/hello_world.js
+++ /dev/null
@@ -1 +0,0 @@
-console.log("Hello, World!")
diff --git a/prep/user interface.md b/prep/user interface.md
deleted file mode 100644
index b20168aa6..000000000
--- a/prep/user interface.md	
+++ /dev/null
@@ -1,8 +0,0 @@
-| Device        | User interface                        |
-| ------------- | ------------------------------------- |
-| 🧮 Calculator | Buttons and display                   |
-| 📱 Microwave  | Buttons, display and sounds           |
-| 💡 Lamp       | Switch or button                      |
-| 👍 Facebook   | Screen, buttons, menus and text boxes |
-| 🗣️ Alexa     | Mainly your voice, plus buttons/app   |
-| 💬 ChatGPT    | Chat box, buttons, menus and screen   |