Activities/Turtle Art/Getting started

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Getting Started

TAvertical.png

Start by clicking on (or dragging) blocks from the Turtle palette. Use multiple blocks to create drawings; as the turtle moves under your control, colorful lines are drawn.

You add blocks to your program by clicking on or dragging them from the palette to the main area. You can delete a block by dragging it back onto the palette. Click anywhere on a "stack" of blocks to start executing that stack or by clicking in the Rabbit (fast) , Turtle (slow) or Bug (debug) buttons Rabbitturtle.jpg on the Project Toolbar.

The basics

  • Basic turtle graphics: 'forward', 'back', 'arc', and 'right' blocks

  • Pen attributes: 'set pen color' block

  • 'set pen size' block

  • Pen up and pen down


Drawing shapes

  • Use the repeat block to draw shapes

  • This can be generalised to n sided polygons, store n in Box1

  • Use 'start fill' and 'end fill' to draw filled shapes

More

  • 'show' block used for text

  • multimedia: 'show' block used for image (movies, audio)

  • logical operations: 'if' block

  • named variables:'store in' block

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