Conditionals: If, Then, and Beyond!

Conditionals: If, Then, and Beyond!

Learning Objective

At the end of the lesson you will be able to define what a conditional statement is and use it to create conditional expressions in your code.

Explain to the students what they will be able to do after completing the lesson.

What do you already know about conditionals?

What are Conditionals?

Conditionals are statements that execute different pieces of code depending on whether a condition is true or false.

Introduce the concept of conditionals to the students.

If Statements

The most basic conditional statement is the 'if' statement. It executes a block of code only if a specified condition is true.

Explain the syntax of 'if' statements and provide simple examples.

Else Statements

An 'else' statement can be added to an 'if' statement to execute a block of code if the condition is false.

Explain the syntax of 'else' statements and provide examples including if-else statements.

Else If Statements

An 'else if' statement can be added between the 'if' and 'else' statements to execute a block of code if the first condition is false and a second condition is true.

Explain the syntax of 'else if' statements and provide examples including nested if-else statements.

Logical Operators

Logical operators like 'and', 'or', and 'not' can be used to combine multiple conditions in a single conditional statement.

Explain the syntax of logical operators and provide examples of how they can be used in conditional statements.

Ternary Operators

Ternary operators provide a shorthand way of writing simple if-else statements in a single line of code.

Explain the syntax of ternary operators and provide examples.

Switch Statements

Switch statements can be used to execute different blocks of code depending on the value of a single variable or expression.

Explain the syntax of switch statements and provide examples.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.