Songwriting with Parameters

• Read the vocabulary words to the right.
• Share an example of a function that you used in a recent code.org puzzle.
• Share an example of a parameter that you used in a recent code.org puzzle.
• Let's look at the lyrics for this song together.
• Discuss
• Why do you suppose genius.com wrote the chorus once in the beginning instead of writing it over and over in each place where it is supposed to be sung?
• What are other benefits of only writing the chorus once when you sing it many times?
• Imagine that this song is a computer program. Defining a title (like "chorus") for a little piece of code that you use over and over again is called creating a function. This is helpful to computer scientists for the same reasons that it is helpful to songwriters.
• It saves time not having to write all the code over and over in the program.
• If you make a mistake, you only have to change it in one place.
• The program feels less complicated with the repeating pieces defined just once.
• Discuss
• What if the chorus isn't exactly the same each time you repeat it? What would you do?
• Listen to this song. 
• What are the lyrics for the chorus?
• What are the parameters?
• What would the program for the song look like?
• Print and complete this activity.
• Take a picture of the completed worksheet (page 2 only) and post it to your blog.
• Include an RJ about this activity.
• Can you think of any popular songs that have a changing chorus?
• Continue working on your code.org puzzles.