http://www.merlot.org:80/merlot/ A search of MERLOT learning exercises Copyright 1997-2013 MERLOT. All rights reserved. Sun, 26 May 2013 00:34:37 PDT Sun, 26 May 2013 00:34:37 PDT http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 http://www.merlot.org/merlot/viewAssignment.htm?id=429109 Free online math lessons and interactive activities for middle school math teachers and students. The lessons contain graphics and animation to make concepts more visual and include audio narration. The interactive activities involve virtual manipulatives for students to explore and try what-if