The document discusses functions with parameters in programming. It introduces API (Application Programming Interface) as a collection of commands used to build applications. Functions can have parameters to customize their behavior, such as specifying the distance or angle for a move or turn. The lesson objectives are to use functions with parameters to complete drawing puzzles, design a personal monogram, and demonstrate knowledge through practice. Students are asked to read documentation on new commands to understand how to use them properly. The benefits of functions with parameters include controlling behavior, reusing solutions, flexibility, and experimenting with different inputs and outputs.

1. UNIT 3
ALGORITHM &
PROGRAMMING
Created by Mr. Nidal Saleh

2. Recall from previous session
 Function: also known as method/procedure which
is a set of commands that can be called again and
over again.
 Benefits of Function?
 Define Function then Call the Function to Execute
 Define one function inside another function
 Function is a form of Abstraction finding one
solution for multiple problems.
 Function use Top Down approach breaking down
big problems to sub problems.

3. LESSON OBJECTIVES
Students will:
 Learn to read App Lab’s API documentation
 Use functions that accept parameters in order
to complete a series of drawing puzzles
 Design a personal monogram making use of
the commands you learned during the lesson
 Activity: Demonstrate your knowledge in
Practice
L7: API & Functions with
Parameter

4. Discussion Board on D2L
 What makes a Programmer?
1. Reading Documentation
2. Learn by seeing examples of a language
3. Professional programmers will frequently
reference documentation while designing
software
4. Learning habits of mind and patterns that
allow you to use a language (including its
documentation) effectively
5. Practice makes you a perfect programmer

5. L7: API & Functions with
Parameter
 API (Application Programming Interface) is a collection
of commands used to build applications.
 Functions have parameters which are information that
customize and control the behavior of a function.
 For example, you can specify moveForward(103) to move
the turtle exactly 103 pixels
 Library collection of functions with shared purpose.
 Documentation: A description of the behavior of a
function
 Since parameter value can change, you will often see a written
description for the command. Example:
moveForward(distance), turnLeft(angle) -
drawRectangle(sideLength, width).Code.org
Code.org

6. L7: API & Functions with
Parameter
 App Lab has documentation: look up
documentation about the commands of the language
penColor(), penWidth() dot(), arcLeft(), arcRight(),
moveTo(), turnTo()
Hexadecimal
penColor(“#FF0099”)
Students are asked read documentation
about all the new commands.
Watch Video

7. L7: Activity 1 to 13 on Code.org
 Design a personal monogram making use of
the commands you learned during the lesson
 Share your image & Upload to D2L
Draw whatever you like!
The only requirements are:
• use at least 3 different colors
• use moveTo
Explore the documentation for any new
commands you see and use your skills as
both an artist and user of API
documentation to draw something of
your own choosing.
If in doubt: try to re-create
"I [heart] CS" drawing
shown here.

8. Learning Objectives
 Identify situations for creating functions with
parameters.
 Incorporate functions with parameters into an
"Under the Sea" digital scene.
 Test functions with parameters using random
input.
L8: Creating Functions with Parameters
Watch Video

9. L8: Creating Functions with
Parameters
 What are the benefits of creating Functions with
Parameters?
1. Control behavior of the function – Customize it
for user needs.
2. Create complex drawings.
3. Can generalize solutions to problems instead of
duplicating code.
4. Offers extra flexibility - removes the need to
create multiple functions that do almost the same
thing. – Remove repetition and patterns
5. Easily experiment with different inputs to see
what kind of output we can produce.
Watch Video D2L Discuss & Share

10.  Defining multiple functions to draw different
sized squares results in lots of repetitive
functions .
 Any time you find yourself effectively copy and
pasting large sections of code, it's usually a
sign that there is a better way.
L8: Creating Functions with
Parameters

11. L8 Activity 1 to 14 on Code.org
 Modify the program that creates an “Under the
Sea” scene by adding parameters to functions.
 Use the random number functions to supply
random values to function calls so the scene
looks a little different every time the program
runs.
Example: randomNumber(0,3) to randomize
image so that every time your run program you
get different scenes like below:

12. Recap from this session
 What is an API
 How to create a function with parameter
 How to become a good programmer
 Benefit of creating functions with parameters