Some of these circle designs are very attractive, especially with the colour, and also very demanding. Close attention to detail is needed, but if you have done some of the other challenges involving circles you might feel quite confident. Otherwise why not go back and look at LOGO Challenges 10 , 11 and 12 .

The WAIT < n> command simply asks LOGO to WAIT before carrying out the next command so that you have time to see what is happening!!

These sequences should look very familiar using the values for the variables that are suggested but what is happening when you change the starting value of the variable?

You might also like to begin by thinking about a procedure that was sent to us.


What is going on here?
Remember - be patient and change only one variable at a time to begin to see what is happening.