Wednesday, September 23, 2026 · 2:00 PM – 3:30 PM
Meeting Room A — 486 Main St., Acton, MA
Back in olden times, before the internet, cell phones, and video games--when Mr. Robert was just a young nerdy whippersnapper (instead of an old nerdy librarian)--he made rubberband tanks with wooden sewing spools. Thanks to 3D printing, we can make even better versions today, but the principle is still the same--convert potential energy into kinetic energy. All materials supplied. Grades 1+.