We followed up last year's 4th grade lesson, The Pitcher and the Crow, with Scientific Design Part 2. Instead of the students designing parachutes, they designed paper bridges to hold as many pennies or weights as possible. They could only use one piece of paper and must keep the "span" of their bridge at 4 inches. We had some amazing bridges! The student scientists were surprised when they hypothesized that only about 20 pennies could be held on the paper bridge. As they folded the paper into different shapes, they were surprised to see that many bridges held over 200 pennies and some held almost 400 pennies.
BLAINE'S BRIDGE and BLAINE'S FOLDS:
We found that the bridges holding the most pennies had some sort of triangular design in their folds.
MARCUS'S CUP OF PENNIES
This cup is not touching the books. It is being held by the paper.
PARKER WAS SURPRISED THAT HIS BRIDGE HELD SO MANY PENNIES.
Lots of bridges, lots of designs!
Mollie's journaling was awesome. She sketched and numbered each design. Mattie had a way of really drawing her designs accurately, too.
Mollie's journaling:
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