Editor’s note: This segment was rebroadcast on Sept. 30, 2025. Click here for that audio. In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class.

In effort to promote friendly competition, Freeland Middle School 7th and 8th-graders learned how to quickly stack cups in precise form, not to allow any to tumble down. Students competed against one ...