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Strongest Shapes

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Using index cards and only one shape in your design, build a bridge that can support the weight of one die-cast toy car
across an 8-inch span.

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    Activity Instructions Were Clear and Easy to Follow 
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Related Programming Resources

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Originating Source Dream Big
American Society of Civil Engineers
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Bridges: An Introduction to Ten Great Bridges and Their Designers by Didier Cornille

The Science of a Bridge Collapse by Nikole Brooks Bethea

Reviews

Rating 
Participants Enjoyed the Activity 
Participants Learned from This Activity 
Activity Instructions Were Clear and Easy to Follow 
Would Recommend 
11/26/2017

I think I used weak index cards

I thought index cards were pretty uniform, but found that even our arch shape was pretty floppy with the ones I had, and as we worked with them, I realized they felt a little thinner than I'm used to. Kids had a good time beefing up the tape and found the shapes held up better when taped into groups, but we never wound up with a highly functional bridge. I also found that 10+ was probably too few cards for any kids. Luckily, they're cheap, so have lots of them! Kids had a fun time with the activity.

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Strongest Shapes

Strongest Shapes

Using index cards and only one shape in your design, build a bridge that can support the weight of one die-cast toy car
across an 8-inch span.