Gummy Worms and Roller Coasters at MFS Science Expo

The surest way to get little kids interested in something? Make them think the older kids think it’s cool.

That’s the idea behind ’s Science and Engineering Expo. Marking its 14th year Thursday, the expo showcased more than 200 science and engineering projects prepared by Middle and Upper School students, which they then showed off for their younger classmates in the Lower School.

Barb Kreider, chair of the school’s science department, said students pretty much have free rein to pick their projects. They’re usually linked to what they’re studying in the classroom.

One of the key requirements for all the projects though is demonstrability: Can it be explained to a kindergartener?

“They’re graded on it,” said Kreider, “to see if what they’ve done is user-friendly for a 7-year-old."

Why? "We’re pretty sure that pushes their learning," she said. "If you can (explain it), you probably really understand it.”

So while quantum physics is off the table, projects like demonstrating how gummy worms are made or figuring out the best angle to get the fastest roller coaster ride are both educational and engaging for the younger students, she said.

“It isn’t science unless you communicate it,” she explained. “Science rests upon the ability for you to be able to reproduce what I do.”