1. Search for it on your computer
Start Logo
Search for it on your computer

2. Basic Commands Enter these commands. FD 100 RT 90 A : Square
Tasks 1 & 2
Enter these commands.
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
FD 100
RT 90
A : Square
Q : What does this draw?
If you get it wrong type CS to clear the screen

3. Repeat Command Look at these commands again.
Task 3
Look at these commands again.
The same instructions get repeated 4 times
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
FD 100
RT 90 1 2 3 4
We would only have to put them in once if we used a repeat command
Try this…
REPEAT 4 [ FD 100 RT 90 ]
How many times to repeat
What to repeat
Try this…
REPEAT 4 [ FD 100 RT 90 ]

4. More Basic Commands Enter these commands. FD 100 RT 60
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
FD 100
RT 60
This Shape is not complete yet
Q : What do you think it will be?
Finish the shape by adding more instructions

5. Repeat Command
Task 3
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
See if you can create a repeat statement to create this new shape.
The same instructions get repeated 4 times
How many times to repeat
What to repeat
Hint
REPEAT X [ What you want to repeat ]
Answer
REPEAT 6 [ FD 100 RT 60 ]

6. Procedures
Tasks 4 & 5
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
TO & END
Rather than having to remember and type all of the commands in to draw a shape, you can program the computer using a Procedure.
Procedures “Remember” what you did and will do it again when you ask.
You have now created a procedure called Square that you can use again and again.
Try this…
To Square
Repeat 4 [FD 100 RT 90]
End
Clear the screen (CS) and type Square to see it work again

7. Other Commands HOME PU = Pen Up PD = Pen Down PE = Pen Erase
(Moves the pen/turtle back to its starting position)
PU = Pen Up
(Lifts the pen off of the page so that lines will not be drawn)
PD = Pen Down
(Puts the pen back on of the page so that lines will be drawn)
PE = Pen Erase
(Turns the pen into an eraser that deletes anything it goes over)
PPT = Pen Paint
(Turns the eraser back into a pen that can draw again)
SETPC 0-15 = Set Pen Colour
(Changes the colour of the lines drawn)
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
TO & END
PU = Pen Up
PD = Pen Down
PE = Pen Erase
PPT = Pen Paint
SETPC 0-15
HOME
HT = Hide Turtle
ST = Show Turtle

8. The Robot Now lets see what you can do! Task 6 Commands
Use LOGO commands to draw the following robot’s face.
Task 6
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
TO & END
PU = Pen Up
PD = Pen Down
PE = Pen Erase
PPT = Pen Paint
SETPC 0-15
HOME
HT = Hide Turtle
ST = Show Turtle
The numbers provided should help.

9. The Robot
Now you have the commands, create a new procedure called ROBOT to draw it again.
See if you can make your robot a little more realistic. Try changing the eyes to circles and the mouth to a smile!
Create a new procedure called ROBOT2 to draw your new robot.
Commands
FD = Forward
BK = Back
RT = Right Turn
LT = Left Turn
CS = Clear Screen
REPEAT X [ what ]
TO & END
PU = Pen Up
PD = Pen Down
PE = Pen Erase
PPT = Pen Paint
SETPC 0-15
HOME
HT = Hide Turtle
ST = Show Turtle

10. Shapes Created with Logo