Conditional Statements

Summary

Day 12 PowerPoint deck
MakeCode Arcade
Putting it all Together Project
Note to teacher: You can find directions for how to create a screencast here. There is a PowerPoint for a variety of devices (Windows 10, Mac, iPad, and Chromebook).

CRD-2.B Explain how a program or code segment functions. 4.A
CRD-2.G Describe the purpose of a code segment or program by writing documentation. 4.A
AAP-1.A Represent a value with a variable. 3.A
AAP-2.G Express an algorithm that uses selection without using a programming language. 2.A
AAP-2.H For selection: a.) Write conditional statements. 2.B b.) Determine the result of conditional statements. 4.B

CRD-2.A.1 The purpose of computing innovations is to solve problems or to pursue interests through creative expression.
CRD-2.B.2 A code segment is a collection of program statements that is part of a program.
CRD-2.G.3 Programmers should document a program throughout its development.
AAP-1.A.1 A variable is an abstraction inside a program that can hold a value. Each variable has associated data storage that represents one value at a time, but that value can be a list or other collection that in turn contains multiple values.
AAP-1.A.2 Using meaningful variable names helps with the readability of program code and understanding of what values are represented by the variables.
AAP-2.G.1 Selection determines which parts of an algorithm are executed based on a condition being true or false. 
AAP-2.H.1 Conditional statements, or “if-statements,” affect the sequential flow of control by executing different statements based on the value of a Boolean expression.
AAP-2.H.2 The exam reference sheet provides
- Text: IF(condition) { <block of statements> }
- Block: IF condition block of statements in which the code in block of statements is executed if the Boolean expression condition evaluates to true; no action is taken if condition evaluates to false.

What is a Boolean value?
- Variable that can only be true/false.
How do you test if a Boolean variable is true/false?
- Use an if statement.
- Explain conditional statements.
What is another way to define something as true or false?
- Relational operators.
- Relational operators are used to test the relationship between two variables, expressions, or values.
- A comparison using a relational operator evaluates to a Boolean value.

Review the requirements for the Putting it all together Project.
Students will create a program that:
- Asks for user input.
- Incorporates the use of string, integer, and Boolean variables.
- Uses relational operators.
- Incorporates conditional statements.

Students will do the following for homework:
- Take a screenshot of their code segment.
- Create a screencast of their program running.
- Answer the following questions:
  - What is the purpose and function of their program?
  - What is the input and output of their program?
  - Explain what the nested conditional in the program does.
Students will enter all of their work on the Putting it All Together Project page.