You are going to screenshot all of your work into a Powerpoint file.

To download the PowerPoint by clicking on the image below

To save your powerpoint go to: File explorer -> Year 9 Common Area:S -> You can save here -> Computer Science -> Term 1 -> Lesson2

Save the Powerpoint file: as your name

Python Turtle changing the background

Tick each task when you have successfully done it in the following list:

It should look like this:

Creating Shapes

• In the last lesson, you typed lots of repeated commands to create some shapes. This is enormously repetitive - it'd be much more convenient if we could instead find a way of repeating those instructions which would then also simplify our code."
• Below is some python code see if you can work out what it does.

import turtle
# Set up the window and its attributes
wn = turtle.Screen()     
# Choose our background colour. US spelling.
wn.bgcolor("white")      
# Window title
wn.title("Turtle Power") 

# Create tim and set some attributes
tim = turtle.Turtle()   
tim.color("green")
tim.pensize(5)

# Repeat the indented instructions 4 times.
for myMoves in range(4): 
    tim.forward(100)
    tim.left(360/4) 

# Wait until the window is closed.
wn.mainloop()           

• Note: Python is fussy about indentation. The two lines after the "for" command both need to be tabbed into the page. This lets Python know what instructions it is repeating, and which it isn't.

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Lets try the following tasks:

Tick each task when you have successfully done it in the following list:

Complete the following tasks

In Thonny, copy and paste the python code above
Run your program



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• What shape was drawn?

Review task:

Tick each task when you have successfully done it in the following list:

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I can run the code in Thonny to draw a square.
I can modify the code to draw a triangle.
I can modify the code to draw a pentagon.

User driven shapes:

#ask the user to input the size of our shape
size=int(input("What size lines would you like? "))

# Repeat the indented instructions 3 times.
for myMoves in range(3):
    tim.forward(size)
    tim.left(360/3)  


          

Tick each task when you have successfully done it in the following list:

Extension task:

Tick each extension task when you have completed it in the following list:

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I can write code to ask what pen thickness (pensize) the user would like, and set the line to that thickness too.
I can write code to ask what the colour of the shape drawn should be and make the shape that colour.

Example

Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level

• Look at the pattern below see if you can recreate it using the code you have learned so far.
• We can do this by using loops.

Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level

Create a shape drawing program that asks the user to enter different information to create their own shape:

Complete the review slide below for Homework

Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level