BBP Activity 8: Python Extra Function Exercises

:video_game: Activity Time!

Time needed: 30-40 minutes
What you'll create: Three awesome programs that use functions to:

• :emoji: Add numbers together like a calculator
• :emoji: Check if numbers are even or odd
• :emoji:️ Convert temperatures from Fahrenheit to Celsius

Activity Instruction:

In this activity, you will continue practicing Python functions with more advanced concepts. You'll learn to create functions that return values, work with mathematical operations, and handle conditional logic within functions.

Before You Start:

:white_check_mark: Make sure you have:

• Your EduBlocks account ready
• Completed the previous Functions lesson
• A notebook to write down your ideas
• 30-40 minutes of coding time

Setup Instructions

1. Open EduBlocks and login with your Google account: https://app.edublocks.org/login

2. Start a new project:

   • Click on the "Editor" icon for a new project
   • Click on the "Projects" icon to resume an existing project

Setup Steps:

1. Select the Python 3 mode (look for the Python logo!)
2. Give your project a clear filename like: Exercise (Extra Function) 1
3. Click "Start Coding" button and then "Save" at the top-right

:bulb: :bulb: Save Often!

Remember to save your work every 5-10 minutes! Just click the "Save" button at the top-right. This prevents losing your amazing code if something goes wrong.

Important: Keep all three exercise tabs open - you'll need the share links for submission!

Steps to Complete Your Extra Function Exercises

Exercise One: Addition Function :emoji:

Goal: Create a function that adds two numbers together and returns the result!

Step-by-Step Instructions:

1. Drag the def block from the Functions category
2. Name your function add_num and give it 2 parameters: num1 and num2
3. Inside the function, drag a return block
4. In the return block, use the math blocks to create: num1 + num2
5. Outside the function, drag a print block
6. Inside the print block, drag your add_num function and enter the numbers 1 and 5

:bulb: :emoji: What's "return"?

The return block tells your function to send back an answer! It's like when you ask a friend "What's 2+2?" and they return the answer "4" to you.

Exercise 2: Even/Odd Checker :emoji:

Goal: Create a smart function that tells you if a number is even or odd!

Step-by-Step Instructions:

1. Drag the def block and name your function is_even with 1 parameter: num
2. Inside the function, drag an if/else block
3. For the condition, create: num % 2 == 0
   • Drag the % (modulo) operator from Math
   • Connect num, %, and 2
   • Use the == comparison block
4. In the if section, drag a return block with True
5. In the else section, drag a return block with False
6. Outside the function, create two print statements:
   • First: print(is_even(9))
   • Second: print(is_even(10))

:bulb: :dart: Understanding Modulo (%)

The % operator gives you the remainder after division. So 10 % 2 = 0 (no remainder, it's even!) but 9 % 2 = 1 (remainder of 1, it's odd!). Cool trick, right?

Your function should work like this:

• If the number divided by 2 has NO remainder -> return True (it's even!)
• If there IS a remainder -> return False (it's odd!)

Exercise 3: Temperature Converter :emoji:️

Goal: Build a function that converts Fahrenheit to Celsius - super useful for science class!

Step-by-Step Instructions:

1. Drag the def block and name your function f_to_c with 1 parameter: temp
2. Inside the function, drag a return block
3. Build the conversion formula using math blocks:
   • First: temp - 32
   • Then: multiply the result by 5
   • Finally: divide everything by 9
   • The complete formula: (temp - 32) * 5 / 9
4. Outside the function, create two print statements:
   • First: print(f_to_c(32)) - This should show 0°C (freezing point!)
   • Second: print(f_to_c(212)) - This should show 100°C (boiling point!)

:bulb: :emoji:️ Fun Temperature Facts!

• 32°F = 0°C (water freezes)
• 212°F = 100°C (water boils)
• 98.6°F = 37°C (normal body temperature) Try converting your own body temperature after completing the exercise!

The Magic Formula:

Celsius = (Fahrenheit - 32) × 5 ÷ 9

Troubleshooting Tips :hammer_and_wrench:

Function not working?

• Make sure your return block is INSIDE the function (indented)
• Check that you're using the correct parameter names
• Verify your math operators are in the right order

Getting weird results?

• For Exercise 2: Make sure you're using % (modulo) not / (division)
• For Exercise 3: Remember to use parentheses around (temp - 32)
• Double-check your function names match exactly when calling them

Can't see output?

• Make sure you have print() blocks around your function calls
• Check that you're calling the function with actual numbers

Required Elements :white_check_mark:

Your completed exercises must include:

• :white_check_mark: Exercise One: Function with two parameters that returns sum of numbers
• :white_check_mark: Exercise 2: Function with conditional logic that returns True/False for even/odd check
• :white_check_mark: Exercise 3: Function that performs mathematical conversion using the Fahrenheit to Celsius formula
• :white_check_mark: Proper function calls with print statements to display results
• :white_check_mark: Correct return values and function syntax in all exercises

:trophy: Challenge Yourself!

Want to level up? Try these bonus challenges:

1. Super Calculator: Modify Exercise 1 to create functions for subtract, multiply, and divide too!
2. Number Analyzer: Extend Exercise 2 to also check if a number is positive, negative, or zero
3. Weather Station: Add a function that converts Celsius back to Fahrenheit (hint: F = C x 9/5 + 32)
4. Create a Menu: Make a program that asks the user which conversion they want and calls the right function

:bulb: :star2: Pro Tip!

Functions with return values are like building blocks in real Python programming. Game developers use them to calculate scores, scientists use them for formulas, and app developers use them to process user data. You're learning real programming skills!

Project Submission

When you have completed your "Python Extra Function Exercises" activity, submit it using the link below: Submit Your Project Here

Before submitting, check:

• All three exercises are complete and working
• Each exercise is saved in its own EduBlocks project
• You've tested each function with the required values
• You have all 3 project share links ready

Note: You need to submit 3 project links for this activity - one for each exercise.

Great job learning about functions that return values! These are super powerful tools in programming! :tada: