U3Ch1L5_Creating Functions
Purpose: Students will learn how to create a Function.
Vocabulary: Abstraction, Function (Procedures)

Question: You were limited to 4 commands when you created the 3 x 3 Grid ‘Turtle Drawing’ in the last class. What additional commands would you have liked to have had available to you? 
State: Programming languages will always have some commands that are already defined, but there will be many instances when the exact command we want isn’t available. Today we’re going to start exploring a powerful feature of most programming languages that will allow us to overcome this issue and create commands of our own. These are called Functions.

Video: “Defining & Calling Functions.”

• Journal: Creating A Function
• What are the two steps required to use functions in JavaScript? First, Define the function. Second, Call It!
  • Define the Function: Give a single name to a set of actions you want the computer to perform.
  • Call It: Type the name of the function followed by a set of   “( )” parenthesis.
    • “( )” parenthesis: Tells the computer to perform the actions you gave the name to.

• Puzzle 3: Turn A Round.
• Puzzle 4: Plus Sign
• Puzzle 5: Draw Rectangle
• Puzzle 7: Function calling a Function – Create a Rectangle.
• Puzzle 8: Function in a Function – Create Zig-Zag Shape.
• Puzzle 9: Function that calls another function – Create Zig-Zag Shape.
• Puzzle 10: Now create the diamond!

Journal: Define “Abstraction.” Simplifying a task.
How is the use of a Function an example of Abstraction?