Terrapin Resources

Welcome to our Program Library!

These pages contain an ever-growing list of Logo source code files. Many of these files demonstrate programming techniques, or Terrapin Logo features. You can download the source code to all programs, and modify them to your liking.

If you have a Logo program that you would like to share, let us know!

Robot Commands

Terrapin Logo can talk to several robots! Please read the Robot Commands page for details.

Please click one of the tag words below to filter the table for stories that include the clicked tag word. Click here to show all entries.


    TitleProcedureDescriptionLevelTags
    24-Hour ClockSTART Displays a 24-hour clock Beginner TIME, Clock, Lists
    3-Card MonteCREATE.CARDS, CREATE.CONTROLS A game of chance to locate the Queen of Hearts. Intermediate Game, Package
    About this Program...ABOUT Document your project with Help/About this Program... Beginner Help, Documentation
    ArnoldARNOLD Logo Art Beginner Art
    Bee-Bot EmulatorBEEBOT Bee-Bot Emulator Intermediate Properties, Turtle, Drawing, Bitmaps, Bee-Bot, Emulator
    Beethoven's "Fuer Elise"ELISE Plays Beethoven's Fuer Elise Intermediate Music, Instruments, Play
    Biosphere and BiosquareBIOSPHERE, BIOSQUARE Logo Art Beginner Art, Graphics
    Black and WhiteB&W 1 Black and White Art Beginner Art
    Card TrickMOVE, CREATE.CARDS, MAKE.HAND Logo never fails to find your card. Intermediate Game, Package, Animation
    ChopsticksMAIN Play "Chopsticks" on the computer Beginner Music, Lists, Voices
    Coin FlipsCOINFLIPS Flip a coin to see how often heads or tails will fall Beginner Math, Random
    ColorHelperCOLORSN, COLORSG, SHADES, GREENS A set of procedures to help you play around with the Extended Colors. Beginner Colors, Utility
    ConcertCONCERT Plays each available instrument Beginner Music, Instruments, Play
    CrabCRAB Crate geometric shapes Beginner Formulae, Shapes, Complex images
    Draw Color NamesSHOW.COLOR.NAMES Draw the names and the color values of the 16 colors available as color indexes Intermediate Drawing, Colors, Turtle
    Draw a Wheel of ColorsCOLOR.SPRAY Draws a color wheel Beginner Drawing, Colors, Turtle
    Easy ArtEASYART 1 Graphics Art Beginner Art, Graphics
    FactorialsFACTORING, FACTORIAL.FOR, FACTORIAL.WHILE, FACTORIAL.GO, FACTORIAL.RECUR Various ways to calculate the factorial of a number Beginner Math, Factorial
    Fly EscapeFLYESCAPE See how long you can fly! Beginner Fly, Escape, Maze
    FractalsCOLLEEN, DANA, DAPHNE, DONNA, ELISA, JENNIFER, JESSICA, KEEGAN, MELISSA Draws various fractal images Intermediate Fractals, Formulae
    GemGEM Logo Art Beginner Art, Graphics
    Go Get GeorgeGO.GET.GEORGE A hidden picture puzzle game. Beginner Game, Package
    Head For Home Head For Home is a 2-player game of logic, luck and a little strategy. Beginner Game, Package
    J.S. Bach's Partita in EPARTITA Plays J.S. Bach's Partita in E Intermediate Music, Instruments, Play
    J.S. Bach's Toccata and Fugue in D MinorTOCCATA Plays J.S. Bach's Toccata and Fugue in D Minor Intermediate Music, Instruments, Play
    List all FontsFONTCHECK Lists and shows all available fonts Intermediate Fonts, Controls
    List all Musical InstrumentsINSTRUMENTCHECK Lists and plays all available music instruments Intermediate Controls, Music, Instruments, Play
    List all SoundsSOUNDCHECK Lists and plays all available sounds Intermediate Controls, Sounds, Play
    Logo Works: Lessons in Logo filesBEDROOM, BOOKCASE, CAR, CONNECT, FISH, GALAXY, GALAXY2, MAP, MAZE1, MAZE2, MAZE3, POLYGONS, SHIELD, SHIRT Files referenced in Logo Works: Lessons in Logo Beginner Logo Works
    McQuizWizMCQUIZWIZ Multiple choice quizzes in Logo. Intermediate Controls, Data
    Morse Code Explore the Morse Code system of communication. Intermediate Package, Communication
    Number Guessing GameMAIN A number guessing game Beginner Guess, Numbers
    One KeyONEKEY Move the turtle with single keystrokes Intermediate Keyboard, Turtle, Drawing
    ScatterGramssetup.screen Two player game of scrambled words. Intermediate Game, Controls
    SemaphoreSEMAPHORE.DISPLAY Explore the semaphore system of communication. Intermediate Package, Communication
    SnowflakesDRAW.FRACT Draws six-sided snowflakes Beginner Fractals, Formulae
    String ArtSTRING Koch string variations Intermediate Koch, Strings, Formulae
    TTPRINT - Formatted text drawingTTPRINT Drawing of formatted text Intermediate Fonts, Text drawing, Turtle
    The Birthday ParadoxSAMEBIRTHDAY Calculate the probability of two people having the same birthday Beginner Math, Birthday
    The On-Screen PianoPIANO Creates a clickable on-screen piano Intermediate Music, Instruments, Play, Turtle, Drawing, Mouse
    Tic Tac ToeTICTACTOE Play Tic Tac Toe against the computer Intermediate Game, Tic Tac Toe
    Ticking ClockINTRO, RUNCLOCK, AUTHORINFO An analog clock Advanced Clock, TIME, Animation
    TrianglesColorTriangles5 How many triangles do you see of N non-parallel lines? Intermediate Math, Combinatorics
    Turtle Rope Swing GameMAIN Illustrates angles and degrees Intermediate Angles, Degrees