|Sid the Science Kid|
|"The Broken Wheel"|
|Air Date||February 9, 2009|
|Previous Episode||Sid's Health Day|
|Next episode||My Slide|
"The Broken Wheel" is the twenty-first episode of the television series Sid the Science Kid.
When a wheel falls off Sid's favorite toy truck, he tapes it back on. But now the wheel won't spin, and Sid wonders how exactly wheels work? At school, Sid explores how wheels are simple machines that help move all kinds of things like cars, trains, tricycles, and even toy trucks!