We are in the speed unit. I give my students the Speed Equation Triangle. This is so cool, especially for those kids not comfortable with algebraically rearranging equations. I got this from my Friend Mr. Lake at Buchanan High School. Mr. Lake tells me he got it in high school from our chemistry teacher Mr. Wentworth. Thank both of you. I hope this helps, Love to Teach and Teach with Passion Remember...It's not Magic, It's Science http://qp.clovisusd.k12.ca.us/rey_kinney [email protected]