A collection of experiences on learning and teaching with digital media
Lesson 1 : LOGO
Principal LOGO Commands
FORWARD n FD moves the turtle forward n units
BACK n BK moves the turtle back n units
RIGHT n RT turns the turtle n degrees to the right
LEFT n LT turns the turtle n degrees to the left
HOME none Returns the turtle to its origin
CLEARSCREEN CS Erases the screen
HIDETURTLE HT Hide the turtle
SHOWTURTLE ST Show the turtle
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Forward 100 - moves the turtle forward 100 units
Back 50 - moves the turtle back 50 units
Right 45 - turns the turtle 45 degrees to the right
Left 90 - turns the turtle 90 degrees to the left
Home - Returns the turtle to its origin
ClearSceen - Erases the screen
Shortcut commands ...
The same commands can be issued using:
FD 100
BK 50
RT 45
LT 90
Home (ie no shortcut)
CS
Geometry with the turtle
Square
Repeat 4 [fd 200 rt 90]
Rectangle
Fd 300 rt 90 fd 150 rt 90
Circle
Repeat 360 [fd 3 rt 1]
Triangle
Repeat 3 [fd 300 rt 120]
Pentagon
Repeat 5 [fd 200 rt 72]
Exercises
