Math in the News In a recent issue we looked atthe Great Monarch ButterflyMigration. See the 9/2/12 issue. In this issue we look at newdata from migration maps tocalculate the average speed ofthe butterflies in their migration. Butterflies are tagged beforetheir journey and along the wayscientists note the locations of The Butterfly Migration: UPDATEthe tagged butterflies. Let’s lookat the data and calculate!
Math in the NewsWatch this amazingPBS video to learnmore about theMonarch butterfly’smigration fromCanada to Mexico.http://video.pbs.org/video/1063682334/
Math in the NewsGo to this Web siteto find the migrationmaps.http://www.learner.org/jnorth/maps/monarch_peak_fall2012.html
Math in the NewsClick on the “Peak Migration” link andzoom in on the map. Note the differentcolored dots.
Math in the News• Take different measurements between the yellow dots (Aug 30 – Sept 5) and the reddish dots (Sept 13 – Sept 19).• These dots represent peak appearances of butterflies over a 20-day period.
Math in the NewsCalculate the average speed of themigration per day using this formula.
Math in the NewsCalculate theaverage daily speedfor all yourmeasurements. Findthe mean andmedian of thesevalues.Over the 2000-miletrek the butterfliesaverage 50 mi/day.How do yourcalculationscompare?