A video explains both positive and negative feedback loops including body temperature, ripening fruit, and diabetes. An accompanying worksheet helps organize scholar's notes. 

Explore the role of feedback loops in maintaining nature's delicate balance with this short science video. Introducing the concepts of positive and negative feedback, multiple examples are presented that explore the intricate web of...

We all need a little feedback, both positive and negative! Take on one of the trickier Biology 1 concepts using a thoughtfully worded video from a fantastic biology playlist. The narrator explains both types of feedback with plenty of...

What happens in the Arctic doesn't always stay in the Arctic. Follow along with this short video as it investigates how small changes in the temperature of Arctic regions can have dramatic effects on the global climate through a series...

Build a strong foundation for your teaching of stability and change! The video addresses the Next Generation Science Standards Cross-Cutting Concept through insightful examples. The narrator includes ideas for introducing the standard in...

Animals don't read clocks, so how do they know when it is time for eating, sleeping, and other cyclical needs? Viewers watch an animation of the genes and the molecular clocks inside most mammals. They compare the difference in wild...

Hey, crank up the thermostat, my computer froze again! In a thermoregulation video, learners see how organisms either maintain their body temperatures or do not. The instructor explains the difference between conduction, convection,...

Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. He uses thermoregulation in mammals to explain how a negative feedback loop functions. He uses fruit ripening to explain how a positive feedback...

Learn how positive and negative feedback loops work in nature and how they support the balance of an ecosystem. [5:10]

Paul Andersen explains how organisms are able to regulate their internal body temperature (or not). He starts with a brief description conduction, convection, radiation and metabolism. He contrasts ectotherms and endotherms. He also...

Paul Andersen reviews the major concepts within the fourth unit of the new AP Biology framework. He begins by differentiating between negative and positive feedback loops. He explains how a stable internal environment is maintained...