Nov 262015
- Start your program with “reset”
- Break you picture up into small pieces that you can program. (DECOMPOSE it)
- Pick one piece and write the code for it
- write a bit, test it, DEBUG it – keep going
- Write “TO procedure_name” at the beginning and “END” at the end of your code for that piece – this makes it into a PROCEDURE.
- You have now taught your computer how to do it and in your code, you just need to type “procedure_name” (choose a name that tells you or anyone else reading your code what it is)
Simplify – Try this activity to put LOGO code in the right order to make a procedure: procedure reorder
VARIABLES
If you want to repeat your piece in different ways, eg different sized circles, you can use a variable in your procedure. It’s a bit like “fd” needs a number with it to tell it how far to go.
- to dot :size
- circle :size
- end
Then when you write “dot” in your program, you need to give it a number, which will be its size, eg dot 40