Difference between revisions of "Activities/Turtle Art/Getting started"
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File:turtlesquare.jpg|Use the repeat block to draw shapes | File:turtlesquare.jpg|Use the repeat block to draw shapes | ||
File:Turtlepolygon.jpg|This can be generalised to n sided polygons, store n in Box1 | File:Turtlepolygon.jpg|This can be generalised to n sided polygons, store n in Box1 | ||
| + | File:Turtlefilledtriangle.jpg|Use 'start fill' and 'end fill' to draw filled shapes | ||
</gallery> | </gallery> | ||
Revision as of 21:03, 28 February 2011
Getting Started
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 
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
