Anje-Margriet Neutel describes some common positive and negative feedback loops, examining how an ecosystem's many loops come together to make its 'trademark sound.' [5:11]

Discover the significance of homeostasis in organisms. Identify negative and positive feedback and how systems work to balance temperature in an organism.

This section of a textbook provides information regarding human homeostasis, a process that has the body continuously monitor its internal conditions. Includes a linked video.

Practice matching situations to multiplication and division expressions and equations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice placing positive and negative decimal numbers on the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.