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Decimal Addition

Add and subtract decimals by lining up the decimal points.

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The World's Best Bikers

Credit: Geert Schneider
Source: http://www.flickr.com/photos/geertschneider/4788128552/
License: CC BY-NC 3.0

Every year, riders in the Tour de France race their bicycles for over 2,000 miles. They ride through mountains and across wide plains. They bike through France and neighboring countries. Finally, they cross the finish line in Paris. But the first rider across the line may not win the race.

Stages Along the Way

The whole Tour de France is broken into 21 stages over 23 days. All riders start together each morning. So, to make the competition fair, race organizers keep track of every rider’s time in each stage. They add all of the times together to find out who has the best overall time for the race. The fastest rider ever averaged 25.9 miles per hour during the race. That’s pretty impressive, considering that the course takes bikers up and down several large mountain ranges. Bicycle fans from around the world cheer for their favorite riders, follow the daily race results, and watch television coverage of the Tour.

Credit: Johan Vandamme
Source: http://www.flickr.com/photos/martinebulcaen/768023331/
License: CC BY-NC 3.0

Nine-member teams from around the world compete in the Tour de France. Organizers award prizes to the fastest individual, the fastest team, and the winners of each stage. There are also special prizes for the rider who does best on mountains, the most aggressive rider, and the fastest rider under the age of 25.

See for yourself: http://www.youtube.com/watch?v=h7wPa1Hl5ZA

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Watch the videos at the links below to learn about the technology used by the cyclists, the victor of the 2013 (and 100th) Tour de France, and a seven-time winner’s loss of his titles.




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Image Attributions

  1. [1]^ Credit: Geert Schneider; Source: http://www.flickr.com/photos/geertschneider/4788128552/; License: CC BY-NC 3.0
  2. [2]^ Credit: Johan Vandamme; Source: http://www.flickr.com/photos/martinebulcaen/768023331/; License: CC BY-NC 3.0

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