Divide the group into teams of 3 or 4
Assign each team a table
Give each time a game pack
Only materials in the pack and those purchased may be used (The envelope may not be used)
Marshmallows may not be used as building material
The marshmallow(s) must be suspended at least 10 cm above the table
The structure, when measured, must stand freely for 10 seconds
Teams have 20 mins
Score as many points possible, points are awarded for each marshmallow suspended 10 cm above your tables and are deducted for all materials used.
Set the scene: “In this engineering challenge you team's goal is to build a platform that can hold marshmallows. It must be 10 cm or more off of the table. You will lose points (with 1, 2 or 3) for each item of material you use, but you gain points for each marshmallow that your structure can support.”
Clarify the rules
Continue: “I have giving you packs with a number of materials, if you need more ask me”
Ensure each team understands and start the timer
Teams can “buy” or “return” items with you. There is no currency in this game, simply a calculation for the materials consumed
When teams ask you to adjudicate their structure, first ask the team to calculate their costs, then measure that it is indeed 10 cm or higher. Lastly ask the team to step away and time for 10 seconds.
Record the cost on the scoreboard and calculate the ROI
TIP: This is a great exercise to get photos.
Warn the teams as the time runs out
TIP: Inform teams how the other teams are doing (to encourage competition)
TIP: Inform how previous teams have done (to persuade teams to use more Marshmallows)
Warn the teams with 2 mins to go that it's their last chance to get measured
At the end of the time stop all teams.
Review the scores, and celebrate the winners.