Yogurt is the byproduct of hungry bacteria that digest the lactose in milk. You can make more yogurt just by feeding the bacteria more milk.
In forested areas, students are often intrigued by mysterious sticks covered in carved tunnels–but students often think the patterns were made by human artists or termites. After students complete this activity, they’ll have the skills to identify bark beetle galleries, to make explanations about the patterns of beetle galleries, and to interpret what these tracks tell us about the life history of the organisms that made them.
In an optional discussion, students can consider outbreak levels of bark beetles that cause the death of many trees, make arguments based on evidence about possible effects on ecosystems, then brainstorm and critique possible management strategies. An optional extension for investigating student questions about bark beetles is also included.
This is an introductory lesson to get students ready to learn about macromolecules and how they can change through photosynethesis and respiration. They will learn how molecules bond and how it can change and bond with many different molecules. "Graduated cylinders and beaker filled with chemical compounds" by Horia Varlan is licensed under CC BY 2.0.
This is an introductory lesson to get students ready to learn about macromolecules and how they can change through photosynethesis and respiration. They will learn how molecules bond and how it can change and bond with many different molecules. "Graduated cylinders and beaker filled with chemical compounds" by Horia Varlan is licensed under CC BY 2.0.
This resource is a Nearpod lesson about learning the adaptations and features of raptors. It was created as part of the Reimagine Teaching program by HawkWatch International. HawkWatch International is a non-profit organization in Salt Lake City, Utah that works to protect raptors and our shared environment through scientific research and public education.
This video segment from the Nevada Department of Wildlife looks at various species of bats and how they impact the environment.
Third Grade science unit about inherited traits with a focus on birds.
This Nature video segment focuses on the four foods most important to the grizzly bears' survival, and it describes the threats to the supply of each of them.
In this video segment from Nature, learn about the problems bears are creating on ranch land surrounding Yellowstone National Park.
This Nature video segment explores how the relationship between humans and grizzly bears has changed over the course of American History, and it describes the closing of the Yellowstone National Park garbage dumps in the 1970s.
Learn about the precautions humans must take in the face of a growing grizzly bear population in this video from Nature.
This video segment explores the world of the beaver, including the biology of the species and, more importantly, its ability to transform an ecosystem for its own benefit.
This video segment describes how the Australopithecus afarensis skeleton known as Lucy could have been fossilized. Footage courtesy of NOVA: "In Search of Human Origins."
This video segment from NOVA: "The Mystery of Animal Pathfinders" explores honeybee communication and navigation.
This is a Pre-K to K lesson about bees and how they help our food grow by pollinating plants. The lesson includes Keynote slides identifying bees from other insects, repetition of the word pollination, a video of the author with backyard bees, and a worksheet assessment.Students will learn how to spot a bee vs other flying insects, what pollination means, what a beehive looks like, and will see bees pollinating flowers and carrying pollen to their hive.
Cocos Island, a remote volcanic summit in the middle of the Pacific Ocean, serves as a beacon for hungry predators, including thousands of hammerhead sharks that travel here each year in search of prey. This video segment from NOVA: "Island of Sharks" depicts some of the common predator-prey interactions that take place in the nutrient-rich waters surrounding the island.
In this video segment adapted from NOVA scienceNOW, scientists discuss their attempts to grow human body parts in a jar.
This video segment from Evolution: "Extinction!" shows the impact of invasive species on native ecosystems.
Biology is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes clicker questions to help students understand—and apply—key concepts.
An introduction to biology intended for non-science majors. Focus areas include chemical foundations, cell structure and division, genetics, and evolution.