1564 /www/nrich/html/content/02/03/logo1/ 1 2011-02-01T00:00:01 <mdoxml version="1.0"><p><span class="editorial">Beginners to LOGO programming may want to start by working through the <a href="https://nrich.maths.org/8045">FIRST FORWARD series of introductory articles</a> before tackling this problem.</span></p> <p> </p> <p>Below are some examples of recursion. I had been trying to replicate the spirals within the head of a sunflower!</p> <p> </p> <table> <tbody> <tr> <td><mdo:image alt="" src="logo1.gif"></mdo:image></td> <td> </td> <td> </td> <td> </td> <td> </td> <td><mdo:image alt="" src="logo2.gif"></mdo:image></td> <td> </td> <td> </td> <td> </td> <td> </td> <td><mdo:image alt="" src="logo3.gif"></mdo:image></td> </tr> </tbody> </table> <br></br> <p>The program used was:</p> <p><strong>TO SUNF :S :A<br></br> FD :S RT :A<br></br> SUNF :S + 1 :A<br></br> END</strong></p> <p>You might like to replicate the spirals above by considering suitable values for the variables :S and :A.</p> <p>The real challenge is to simulate the head of a sunflower with more spirals that are much more tightly packed and look distinctly more &#39;Fibonacci&#39; in proportion!</p> <h4> </h4> <h4> </h4></mdoxml> 2 3 0 0 1 1 0 Using logo to investigate spirals Information and Communications Technology Logo Sequences, Functions and Graphs Fibonacci sequence