'Alternate boat activity' presentation slideshows

Building Challenges: More than Tallest, Strongest, Fastest

Building Challenges: More than Tallest, Strongest, Fastest. Marshmallow Challenge : Build the Tallest Freestanding Structure. The top of the entire Marshmallow is the top: Use as much or as little of only the kit: Break up the spaghetti, string or tape: The challenge lasts 18 minutes:

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