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"Just a quick post- we started a unit on percents today.  Found this activity from Illuminations, but I needed it to be a little bit more.  The activity takes the BMIs and weights of season 14′s contestants and students need to find the percent lost for each in order to find out who won the game.  We then had a discussion on why the show does not award the prize to the person with the most weight lost, but the highest percentage." You could find some good video/media to go along with this to hook students - Maybe a before/after picture video which I'm sure you could find online. Have the students use the video to predict the winner then get into the worksheet. There are some pretty good extension activities embedded here as well: Research how BMI is calculated, Determine whether percentage of weight lost is the best method to determine the winner, etc.

"Since demolishing 78 traffic signals and installing 80 roundabouts, the northern Indiana city of Carmel has reduced the number of accidents by 40 percent and the number of accidents with injuries by 78 percent." There's a great lesson in here somewhere. I'm not sure of the exact structure for it, but here are some of my random thoughts. Let me know if you have others: Use Googlemaps and GoogleEarth in order to determine how many traffic lights are in a specific location in a county/city. Using the calculations in this article/video, how much could the county/city that you researched in Google maps have saved if they installed traffic circles rather than traffic lights. Extension - Research the number of accidents and injury/fatality stats for the area that you've researched. Using the calculations in this video/article, how many lives would traffic circles save in this area?