Learn Logo - 10 Code Examples & CST Typing Practice Test

Logo is an educational programming language known for its turtle graphics and simple syntax, designed to teach programming concepts and computational thinking to children and beginners.

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Logo Counter and Theme Toggle Logo Draw Square Logo Draw Triangle Logo Draw Circle Approximation Logo Spiral Logo Star Logo Draw Polygon Logo Triangle Pattern Logo Random Walk Logo Colorful Spiral

Learn LOGO with Real Code Examples

Updated Nov 20, 2025

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Code Sample Descriptions

Logo Counter and Theme Toggle

make "count 0
make "isDark 0

to updateUI
    print (sentence "Counter: :count)
    print (sentence "Theme: (if :isDark = 1 [Dark] [Light]))
end

to increment
    make "count :count + 1
    updateUI
end

to decrement
    make "count :count - 1
    updateUI
end

to reset
    make "count 0
    updateUI
end

to toggleTheme
    make "isDark (1 - :isDark)
    updateUI
end

; Simulate actions
updateUI
increment
increment
toggleTheme
decrement
reset

Demonstrates a simple counter with theme toggling using Logo variables and procedures.

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Logo Draw Square

to square :size
    repeat 4 [forward :size right 90]
end

square 100

Draws a square using Logo turtle graphics.

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Logo Draw Triangle

to triangle :size
    repeat 3 [forward :size right 120]
end

triangle 150

Draws an equilateral triangle.

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Logo Draw Circle Approximation

to circle :radius
    repeat 360 [forward 1 right 1]
end

circle 50

Approximates a circle using small forward steps and turns.

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Logo Spiral

to spiral :length :angle
    if :length > 200 [stop]
    forward :length
    right :angle
    spiral :length + 5 :angle
end

spiral 10 20

Draws a simple spiral pattern.

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Logo Star

to star :size
    repeat 5 [forward :size right 144]
end

star 100

Draws a 5-pointed star.

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Logo Draw Polygon

to polygon :sides :length
    repeat :sides [forward :length right 360/:sides]
end

polygon 6 80

Draws a regular polygon with N sides.

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Logo Triangle Pattern

to triangle :size
    repeat 3 [forward :size right 120]
end

repeat 6 [triangle 50 right 60]

Draws multiple triangles to form a pattern.

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Logo Random Walk

to randomWalk :steps
    repeat :steps [
    forward 20
    right random 360
]
end

randomWalk 50

Turtle moves in random directions to simulate a random walk.

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Logo Colorful Spiral

to colorfulSpiral :length :angle
    if :length > 200 [stop]
    setpencolor random 16
    forward :length
    right :angle
    colorfulSpiral :length + 5 :angle
end

colorfulSpiral 10 20

Draws a colorful spiral using Logo pen colors.

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Frequently Asked Questions about Logo

What is Logo?

Logo is an educational programming language known for its turtle graphics and simple syntax, designed to teach programming concepts and computational thinking to children and beginners.

What are the primary use cases for Logo?

Educational programming for children. Teaching mathematics and logic. Turtle graphics for visual learning. Introductory programming courses. Developing problem-solving and algorithmic thinking

What are the strengths of Logo?

Excellent for beginners and children. Immediate visual feedback aids learning. Promotes logical and algorithmic thinking. Lightweight and easy to set up. Supports exploration and creativity

What are the limitations of Logo?

Limited industrial or commercial use. Not suitable for large-scale applications. Few modern development tools or libraries. Primarily educational rather than professional. Performance limited for complex computations

How can I practice Logo typing speed?

CodeSpeedTest offers 10+ real Logo code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Logo Counter and Theme Toggle

make "count 0
make "isDark 0

to updateUI
    print (sentence "Counter: :count)
    print (sentence "Theme: (if :isDark = 1 [Dark] [Light]))
end

to increment
    make "count :count + 1
    updateUI
end

to decrement
    make "count :count - 1
    updateUI
end

to reset
    make "count 0
    updateUI
end

to toggleTheme
    make "isDark (1 - :isDark)
    updateUI
end

; Simulate actions
updateUI
increment
increment
toggleTheme
decrement
reset

Demonstrates a simple counter with theme toggling using Logo variables and procedures.

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Logo Draw Square

to square :size
    repeat 4 [forward :size right 90]
end

square 100

Draws a square using Logo turtle graphics.

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Logo Draw Triangle

to triangle :size
    repeat 3 [forward :size right 120]
end

triangle 150

Draws an equilateral triangle.

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Logo Draw Circle Approximation

to circle :radius
    repeat 360 [forward 1 right 1]
end

circle 50

Approximates a circle using small forward steps and turns.

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Logo Spiral

to spiral :length :angle
    if :length > 200 [stop]
    forward :length
    right :angle
    spiral :length + 5 :angle
end

spiral 10 20

Draws a simple spiral pattern.

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Logo Star

to star :size
    repeat 5 [forward :size right 144]
end

star 100

Draws a 5-pointed star.

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Logo Draw Polygon

to polygon :sides :length
    repeat :sides [forward :length right 360/:sides]
end

polygon 6 80

Draws a regular polygon with N sides.

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Logo Triangle Pattern

to triangle :size
    repeat 3 [forward :size right 120]
end

repeat 6 [triangle 50 right 60]

Draws multiple triangles to form a pattern.

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Logo Random Walk

to randomWalk :steps
    repeat :steps [
    forward 20
    right random 360
]
end

randomWalk 50

Turtle moves in random directions to simulate a random walk.

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Logo Colorful Spiral

to colorfulSpiral :length :angle
    if :length > 200 [stop]
    setpencolor random 16
    forward :length
    right :angle
    colorfulSpiral :length + 5 :angle
end

colorfulSpiral 10 20

Draws a colorful spiral using Logo pen colors.

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Frequently Asked Questions about Logo

What is Logo?

Logo is an educational programming language known for its turtle graphics and simple syntax, designed to teach programming concepts and computational thinking to children and beginners.

What are the primary use cases for Logo?

Educational programming for children. Teaching mathematics and logic. Turtle graphics for visual learning. Introductory programming courses. Developing problem-solving and algorithmic thinking

What are the strengths of Logo?

Excellent for beginners and children. Immediate visual feedback aids learning. Promotes logical and algorithmic thinking. Lightweight and easy to set up. Supports exploration and creativity

What are the limitations of Logo?

How can I practice Logo typing speed?

CodeSpeedTest offers 10+ real Logo code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.