[MWForum]re: Koch snowflake and SIZE

[Wendy Petti]

I've now realized three reasons why the snippet of code below does not work in MW:

size/3

1) As I mentioned in my earlier message, we need to put a space before and after the division sign in MicroWorlds.

2) In a recursive procedure, we need to place a colon before the variable name to refer to the value of the variable. (This is not necessary if a slider's name is used exclusively when referring to the value of a variable, but in order to draw the Koch snowflake we must use the colon in order to change the value of the variable in a recursive procedure.  Sorry if I cannot find the words to explain this clearly at the moment...)

3) SIZE cannot be the name of a variable in MicroWorlds, because SIZE is a primitive used to set the size of the turtle, as in:

t1, setsize 60

That is why in my version of the Koch snowflake I used LENGTH instead of SIZE.

Wendy