Balance and Flux Reveal How Organisms Are Connected in Ecosystems
Students read about cats in Borneo and discuss role predators play in controlling population size. They map the interdependencies among species. They read about flux in ecosystems and complete a worksheet.
4th - 8th Science 8 Views 24 Downloads
Use of Dichotomous Keys to Identify Stream Organisms
What kind of organisms are living in the stream? After an explanation on how to use a dichotomous key, groups of three to four use the keys to identify macroinvertebrates from a local freshwater stream. Using the the concept of Stream...
8th - 12th Science
New Review The Periodic Table and Energy-Level Models
Teach your class to think of electrons as tiny packets of energy that travel in waves. Through a short video and diagram, participants see how electrons are located around the nucleus of an atom. They then get into groups and try to...
6th - 8th Science CCSS: Designed
Life Science Toolbox for Fifth Grade
Help build young scholars' understanding of living things with the tools provided in this comprehensive life science resource. Including a total of nine lessons that cover topics ranging from plant and animal life cycles to heredity and...
3rd - 7th Science CCSS: Adaptable
Feedback Loops: How Nature Gets Its Rhythms
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...
5 mins 7th - 12th Science CCSS: Adaptable