Iditarod+Challenge

=Resource=

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=Summary=

===Using Google Earth, students plot the path of the Iditarod race according to differing speeds. This lesson teaches students to calculate time using the distance formula, convert elapsed time between decimals and minutes, and adding elapsed time. ===

=CCSS Alignment for Grades 6-9=


 * ===**6.RP.3 **: //Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.// Students calculate ratios based on rate variables (differing speeds) and convert units between decimals and minutes. ===
 * ===**7.RP.1 **: //Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units.// Students can graph according to different combinations of variables and calculate rates with different lengths or in different units. ===
 * ===**8.EE.5 **: //Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways.// Students graph the results of the different speeds and compare across the proportional variables of the distance formula. ===
 * ===**A-CED.4 **: //Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations.// Rearrange the distance formula to emphasize rate, time, and distance separately. ===