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You have two hourglasses--a 4-minute glass and a 7-minute glass. You want to measure 9 minutes. How do you do it? Answer:
Powered by: The Web Portal For Educators (www.teach-nology.com) ©2007 TeAch-nology, Inc., All rights reserved. |
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You have two hourglasses--a 4-minute glass and a 7-minute glass. You want to measure 9 minutes. How do you do it? Answer:
Powered by: The Web Portal For Educators (www.teach-nology.com) ©2007 TeAch-nology, Inc., All rights reserved. |
