Challenges

http://stem.wesfryer.com/home/engineering-design-challenges

http://www.sciencefriday.com/educational-resources/make-an-art-machine/

http://www.sciencefriday.com/educational-resources/the-science-club-messagechallenge/ http://www.sciencefriday.com/segments/the-science-club-tackles-a-communications-challenge/

Power a car with a falling mass.