<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I use the following tutorial from Duke to make a counter add score. My middle school and high school students get understanding of the same concepts of the clock. <a href="http://www.cs.duke.edu/csed/alice09/tutorials/advancedTutorials/catchTutorial/catch.pdf">http://www.cs.duke.edu/csed/alice09/tutorials/advancedTutorials/catchTutorial/catch.pdf</a></div><div id="AppleMailSignature">Chari Distler</div><div id="AppleMailSignature">North Broward Prep<br><br>Sent from my iPhone</div></body></html>