Y56 How can I program a picture in LOGO?

• Go to j2launch – j2code – LOGO
• Start your program with:
  1. reset
  2. setpensize 5
• CHALLENGE:  Write instructions in LOGO to make this picture.
• 
• Use as many of these commands as possible:
  1. Movement:   fd bk rt lt (with a space then a number)
  2. circle (with a space and a number)
  3. repeat 4 [  …   ]
  4. arc 90 30   – can you work out how this works?  (One number is the size, the other is the angle)
• Use the code below to move around the page without drawing:
  1. pu setxy 100 100 pd   (The numbers are x y coordinates and the screen goes from -250 to 250)
• If you have finished the picture, can you add an eyebrow?
• 

 

Success steps

• Use known commands
• Use left-hand side panel to copy correct commands (syntax)
• Create a page with several elements
• Move around the screen using pu setxy …. pd
• **Learn new commands. eg arc, spiral code
• Check code and debug

Further challenges…

1. 
2. Different shape for the eye (still using repeat)
3. Add hair by using repeat and doing a zig-zag
   1. Can you make the hair curve?
4. Make ears using a spiral – open this file, read it carefully and experiment with the code, before copying into your project.

And if you’ve finished that, have a go at these Debugging Challenges and save them in your files.  DO NOT GET/GIVE ANY HELP.

Computing colours:  LOGO

• Red – copy example code; explore and experiment
• Orange – test and debug own code
• Yellow – use repeat
• Green – use procedures; nested repeats
• Blue – use variables
• Purple – create own LOGO project with variable and procedures