Moves the turtle x points

Example:

forward 50

Explained in lesson:

Logo's turtle

The turtle back x points

Example:

back 50

Rotate the turtle left x degrees

Example:

left 90

Explained in lesson:

Logo's turtle

Rotate the turtle right x degrees

Example:

right 90

Explained in lesson:

Logo's turtle

Will clear the screen and return the turtle home

Example:

cs

Explained in lesson:

Logo's turtle

Will change the turtle to another shape accordin to the following 0 = "turtle", 1 = "cat", 2 = "fish", 3 = "dog", 4 = "horse", 5 = "tiger", 6 = "crab", 7 = "snail"

Example:

csh 1 or csh "dog

Explained in lesson:

Turtle world

Turtle stops leaving a trail

Example:

penup

Explained in lesson:

Controlling the Turtle and Pen

The turtle will leave a trail

Example:

pendown

Explained in lesson:

Controlling the Turtle and Pen

Will cause the turtle to wait X ( 60ths of seconds ) time before executing the command

Example:

repeat 4 [ wait 10 fd 50]

Explained in lesson:

Hi wait

Will set the pen width to X

Example:

setwidth 4 fd 50

Explained in lesson:

The pen width

Hide the turtle

Example:

hideturtle

Explained in lesson:

Controlling the Turtle and Pen

Show the turtle

Example:

ht wait st

Explained in lesson:

Controlling the Turtle and Pen

Moves the turtle to center, pointing upwards

Example:

home

Move turtle to the specified X location

Example:

setx 100

Explained in lesson:

Turtle world

Move turtle to the specified Y location

Example:

sety 200

Explained in lesson:

Turtle world

Move turtle to the specified location

Example:

setxy 100 100

Explained in lesson:

Turtle world

Rotate the turtle to the specified heading

Example:

sh 145

Explained in lesson:

Turtle world

Will create an arc distance RADIUS covering ANGLE angle

Example:

ARC 360 5

Explained in lesson:

Turtle world

Will craete an ellipse width Width and height Height

Example:

ellipse 80 90

Outputs the current turtle position as [ x y ], x or y respectively

Example:

pos

Explained in lesson:

The turtle answer

Outputs the current turtle position as [ x y ], x or y respectively

Example:

xcor

Explained in lesson:

The turtle answer

Outputs the current turtle position as [ x y ], x or y respectively

Example:

ycor

Explained in lesson:

The turtle answer

Outputs the current turtle heading

Example:

heading

Outputs the heading towards the specified [ x y ] coordinates

Example:

towards

Explained in lesson:

The turtle answer

Repeat statements X times

Example:

repeat 4 [ fd 50 rt 90]

Explained in lesson:

Loops

Outputs the current iteration number of the current repeat or forever

Example:

repeat 4 [ repcount ]

Typical for loop. The controllist specifies three or four members: the local varname, start value, limit value, and optional step size

Example:

for [i 1 10 1] [print :i]

Explained in lesson:

The for loop

Define a new named procedure with optional inputs

Example:

to TURTLE repeat 4 [ fd 50 rt 90] end

Explained in lesson:

The turtle is learning

Update a variable or define a new global variable. The variable name must be quoted

Example:

make "foo 5

Explained in lesson:

Variables

access the content of VARNAME

Example:

make "foo 5 repeate :foo [fd 50 rt 360 / :foo]

Create a new list from the inputs

Example:

make "mylist (list "turtle "academy)

Explained in lesson:

Lists

Outputs the first item from the list

Example:

print first :mylist

Explained in lesson:

Lists

Outputs all the items of listname except for the first item

Example:

print butfirst :mylist

Explained in lesson:

Accessing the list

Outputs the last item from the list

Example:

print last :mylist

Explained in lesson:

Lists

Outputs all the items of listname except for the last item

Example:

print butlast :mylist

Explained in lesson:

Accessing the list

Outputs the indexlist item of the list or array

Example:

print item 1 :mylist

Explained in lesson:

Accessing the list

Outputs one item from a list, at random

Example:

print pick :mylist

Explained in lesson:

Accessing the list

Example:

setcolor 1

Explained in lesson:

Colors and printing

Will set the turtle color accroding to the amount of red , green and blue

Example:

setcolor [50 100 50]

Does a paint bucket flood fill at the turtle\'s position

Example:

cs repeear 4 [ fd 50 rt 90 ] pu setxy 50 50 pd fill

Explained in lesson:

Background

Execute statements without drawing but keeping track of turtle movements. When complete, fill the region traced by the turtle with fillcolor and outline the region with the current pen style

Example:

filled "blue [repeat 4 [fd 100 rt 90]]

Explained in lesson:

Background

Will sum x+y

Example:

print sum 2 3

Explained in lesson:

Variables

return the distance between x and y x-y

Example:

print minus 8 2

Will choose a random number between 0 - (X-1)'

Example:

cs print sum random 10 3

Explained in lesson:

Colors and printing

Outputs the remainder (modulus). For remainder and % the result has the same sign as the first input; for modulo the result has the same sign as a the second input.

Example:

cs print modulo 10 3

Execute statment if expressoin is true

Example:

if 2>1 [print "hello]

Explained in lesson:

Colors and printing

Execute StatementTrue if tru else execute statementFalse

Example:

ifelse 0>1 [print "true] [print "false]

Test the specified expression save the result in the local scope for the subsequent use by iftrue iffalse

Example:

test 3>4 iftrue [print "true] iffalse [print "false]

Example:

test 3>4 iftrue [print "true] iffalse [print "false]

Example:

test 3>4 iftrue [print "true] iffalse [print "false]