Lesson 3 - Tweaked

• Computing
• Lower Secondary (Key Stage 3)

Lesson 3 - Python

Year 7 

KO: To be-able to explain what a conditions are in programming.

All 

- To be-able to explain what conditions are and how they are used in programming.

Most

- To be-able explain why conditions are important in programming.

- To be-able to explain how conditions can be used to validate a users input.

Some 

- To be-able demonstrate and show understanding of using conditions in your coding.

Why is programming important?

What does a 'print' statement do in Python?

1. Stops the program
2. Displays output on the screen
3. Saves data to a file
4. Deletes code

What is a variable in Python?

1. A function in Python.
2. A loop in Python.
3. A named container for storing data.
4. An if statement in Python.

Can you...

Write a print statement saying your name e.g. "Joe Bloggs"?

Click here

Can you...

Take an input from a user and use it in a sentence?

Click here

What is a condition?

 Condition

In Python, a condition is a statement that can be seen as either True or False.

Recap: Operators

The below are essential when programming...

if, else - Example Program 

if, else - Program Flowchart

Let's take a look at the actual program...

Click here to take a look at how the program works

Let's look at why the program doesn't work properly!

Click here

'Make the students aware of data type casting'. This example is altered to show them!

Making your own... 

Click here

Using the template above, can you 'Tweak' it? To make the below program.

The legal age to drive a car is 17 Years old.

If you can't drive, the code must print "You are not old enough to drive", 

If you can drive the code must print "You are old enough to drive".

Driving Age: Solution

Click here

if, else, elif - Example Program

if, elif, else Statements

if, elif, else Statements 

Click here 

How if, elif and else statements can be used

Click here

Can you...

Can you create your own program that uses if, elif and else?

I want you to create a program where:

If - you enter your name it prints("That is an awesome name")

elif - you enter John it prints("That is a good name")

elif - you enter Harry it prints("That is an ok name")

else - it prints("That isn't a good name")

What are conditional statements used for?

1. Breaking the code
2. Printing out all possible options
3. Making decisions based on certain conditions
4. Making the code run faster