Humphreys Central Elementary School students learned a bit
about how things work when volunteers from the U.S. Army Corps of Engineers Far
East District visited the school on April 19 as part of Science, Technology,
Engineering and Math week.
Humphreys STEM coordinator Jennifer Moore, a project manager with the FED, said
this is the third year in a row they’ve presented to the school.
the kids love it,” Moore said. “We hope to inspire young minds to pursue
sciences… we try to make it fun and interesting.”
volunteers demonstrated principles of displacement, aerodynamics, flight,
electricity and magnetism, structural strength and tension. Far from being boring
demonstrations, the displays provided an interactive experience for the
At one table
Maj. Al Flowers, Deputy Area Engineer for Construction at Humphreys, demonstrated
Archimedes’ Principle of Density.
water into a glass and then asked a student to add pancake syrup. They syrup sank to the bottom, showing it to
be more dense than water.
asked another student to drop a green olive into the glass—it too sank to the
When a third
student dropped a cherry tomato into the glass it didn’t sink, it dropped
halfway and stopped.
fourth student dropped a small block of wood into the glass—it floated on top
of the oil.
that each demonstrated the principles Greek mathematician Archimedes developed
more than 2,000 years ago.
Project Manager John Noll, project engineer Myles Esmele and partner engineer
Lilian Ukwute demonstrated how electricity and magnetism work, among their
props was a model race car with an electric motor.
corner, Christine Kastl, an engineering support assistant and engineering
intern Phillip Abbott taught students about structural strength using paper
a dozen or so paper cups top down on the floor, covered them with a square of
cardboard and asked a student to stand on the platform—it held.
they removed cups but the structure continued to support the students—until an
energetic one jumped onto the platform and crushed some of the cups.
Across the room,
Col. Phil Keller and Col. Mick Nyenhuis discussed aerodynamics using blow
dryers, ping pong balls and golf balls.
is not a blow dryer, it’s a wind machine,” Keller told the students.
turned on the wind machine and handed it to a student. He placed a ping pong
ball into the air stream and it floated several inches high. Keller then placed
a golf ball into the air stream but it was too heavy and sat on the opening, the
air flowing around it. The golf ball continued to float above it despite the
obstructed air stream.
S. Lohrenz, Deputy Resident Engineer, Pyeongtaek Resident Office said the
experiments give students a range of different things to think about,
especially the ways engineering impacts everything that they do.
touches everything that we do and everything that surrounds us,” Lohrenz said. “If
those experiences can lead them to something that can change the world then
that’s a great thing.”