A Speaker That Shows Sound and 2 More STEM Builds from KiwiCo

Looking for engaging STEM activities that combine science, engineering, and creative play? This video showcases three hands-on building projects perfect for curious kids and the adults who guide them. Watch as a marble roller coaster demonstrates physics principles, a kinetic light-up speaker reveals how vibrations and light help us visualize sound, and a build-and-play chess set introduces strategy while teaching clever design mechanics.

These projects are ideal for parents, teachers, and caregivers seeking interactive ways to spark interest in STEM concepts. Each build offers a different learning angle—from exploring cause and effect with the marble run to understanding engineering through the speaker's light display and the chess set's innovative storage system. Perfect for screen-free learning time that keeps kids engaged while they experiment, build, and discover.