This second challenge in the Figure This! set of 80 math challenges asks students to estimate how fast their hearts beat and how long it will take to beat a million and then a billion times. The web page points out the importance of large numbers when determining the distance to Mars or the size of the national debt. The Getting Started link on the top navigation bar leads to a description of how to determine a person's pulse rate. There are also links to a solution hint, the solution itself, and other related math questions. The Did You Know section uses scientific notation as it notes the interesting fact that a billion has different meanings in the United States and in France and Germany. Online and print resources related to large numbers are included. Copyright 2005 Eisenhower National Clearinghouse


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