Keşfetmeye Ne Dersin?

ÖZET

Maddie is finding out about wind-up toys and how they move along. We see inside a wind-up truck and Maddie uses her special cameras to show us how the spring inside gets tighter and tighter and stores energy so that when it is released the cogs inside move the wheels. Next, Maddie visits a factory where cricket bats are made from willow trees, because it's bouncy and strong.