In this engaging episode of Crash Course Kids, host Sabrina Cruz explores the fascinating world of non-Newtonian fluids through the lens of "Oobleck," a mixture of cornstarch and water. The video begins by reviewing the three standard states of matter—solids, liquids, and gases—defining them by their ability to maintain size and shape. It then introduces the concept that some materials do not fit neatly into just one category, challenging students' understanding of how matter behaves.