Y56 The Great LOGO Christmas Tree Challenge!

LQ How do I debug LOGO code?

1. Work your way through these files
2. Open
3. Debug
4. Save

Success Steps

• Read code as a set of instructions – step by step
• Spot spelling mistakes
• Edit and play to test changes

LQ How can I decorate a LOGO Christmas tree?

1. Open this file
2. Think about what you could add to decorate the tree (bauble, star, bell, present, angel, tinsel….)
3. For each item, make a procedure, eg
   1. to bauble
   2. instructions for bauble
   3. end
4. Then use pu setxy pd to position your items on the tree:
   1. pu setxy 100 100 pd bauble
5. ** For a line of items, you could use repeat, eg
   • repeat 4
   • [
   • bauble
   • pu fd 30 rt 90 fd 40 lt 90 pd
   • ]
6. *** Include a variable with your procedure  to make it different colours or sizes
   • to bauble :col :size
     • colour :col
     • circle :size
     • fill
   • end
7. When you “call” bauble, make sure you give it a colour and size, eg
   1. bauble “red  30