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Crittercam Educator Activities Land Animals GEOGRAPHY STANDARDS 8, 15 30 min SCIENCE STANDARDS A, B, C Students create a food web with the brown bear at the top. Background on the Critters: On land, Crittercam reveals the behavior of animals in inaccessible habitats or at night, when humans cannot easily see or follow them. The Alaskan brown bear is one land animal that Crittercam has been successfully deployed on. Like most bears, it is an omnivore. It eats a wide variety of foods, including both animals and plants. Because brown bears eat so many different foods, they are at the top of a complex food web. Food webs show the feeding relationships and flow of energy among organisms in a community. Every organism is connected with several others in a pyramid-like web with four major layers. From the bottom up, they are: Producers: Plants that convert energy from the sun into nutrients through photosynthesis Primary consumers: Herbivores, organisms that eat plants Secondary consumers: Carnivores, animals that eat animals; Omnivores, animals that eat plants and animals Top-level predators: Animals that as adults are generally not preyed upon by other animals. ACTIVITY Who Eats Whom? 1. Describe what a food web is and discuss what a food web may look like for a brown bear —use the web in this activity as an example. 2. Cool video option! Watch the Crittercam segments on the brown bear on *National Geographic’s Wild Chronicles Season One Collection. Watch carefully for what the bear eats. How many foods do you count? 3. Divide students into teams, and give each a copy of the set of food cards. Ask students to organize the cards into a food web. For purposes of this activity only, a maximum of two animal consumers were selected for each food card. Have students brainstorm more consumer/producer relationships in discussion. 4. Assign students particular roles in the web. Each wears the appropriate food card as a name tag. Students organize themselves physically into the food web. Use string of one color to connect the brown bear with its main animal and plant foods. Use other colors to connect each of those foods to the organisms they feed on, and so on. * Wild Chronicles Season One Collection available at http://shop.nationalgeographic.com Content Development: Sharon L. Barry, Writer; Sheryl Hasegawa, Editor; Kim Hulse, Editor; Melissa Goslin, Project Administor; Alice Manning, Copy Editor; Kristin Dell, Researcher Design: Patrick Truby Educator Consultant: Mary Cahill Special Thanks: National Geographic Remote Imaging, National Geographic Museum ACTIVITY Brown bear Level one (top predator) Level two (secondary consumers) Caribou calf Level three (primary consumers) Leaves Level four (producers) Mouse Salmon Moth Herring Nuts Roots Grass Seeds Cricket Moss Plankton Berries Follow-up ACTIVITies 1 Language Arts: Books About Critters A Bear Named Trouble, by Marion Dane Bauer—fiction Publisher: Clarion Books Grades: 4 - 7 2 Geography: Research different kinds of bears and where they live. Pin images of them on a large world map. A fictionalized account of a real Alaska brown bear’s early life, told from the bear’s perspective and that of a ten-year old boy. Ecosystems, —nonfiction Publisher: National Geographic Grades: 6 - 8 Explore the prairie ecosystem—its populations, habitats, food chains, and food webs. Understand the relationships between the living and nonliving parts of an ecosystem and how ecosystems stay in balance. Content Development: Sharon L. Barry, Writer; Sheryl Hasegawa, Editor; Kim Hulse, Editor; Melissa Goslin, Project Administor; Alice Manning, Copy Editor; Kristin Dell, Researcher Design: Patrick Truby Educator Consultant: Mary Cahill Special Thanks: National Geographic Remote Imaging, National Geographic Museum Land Animals Food Web Cards * Salmon Mouse eaten by Brown Bear eaten by Brown Bear Caribou calf Moth Cricket eaten by Brown Bear eaten by Brown Bear and mouse eaten by Brown Bear Leaves Grass Roots eaten by Brown Bear and Caribou calf eaten by Brown Bear and mouse berries Seeds Nuts eaten by Brown Bear, and cricket eaten by Brown Bear and mouse Moss Plankton Brown Bear eaten by Brown Bear and moth eaten by Brown Bear and Caribou calf eaten by Herring eaten by Brown Bear and mouse Herring eaten by Salmon * For the purposes of this activity only, a maximum of two animal consumers were selected for each food card Content Development: Sharon L. Barry, Writer; Sheryl Hasegawa, Editor; Kim Hulse, Editor; Melissa Goslin, Project Administor; Alice Manning, Copy Editor; Kristin Dell, Researcher Design: Patrick Truby Educator Consultant: Mary Cahill Special Thanks: National Geographic Remote Imaging, National Geographic Museum
