Junk Box Wars

I'm introducing "Junk Box Wars" to classes this year.  What are Junk Box Wars?  They are a more detailed version of our Instant Challenges.  Students participate in creative problem solving challenges using "junk" in their boxes.  It's a friendly competition where students use creativity, problem solving, and teamwork.  In this week's challenge, teams are required to create a chain that will hold weights from anchor points.  The longest chain that holds the most weight wins.  The key is not to have "The Weakest Link."