DK Find Out! Food Chains

Living things are linked through their food.

SciGirls Connect: All Tangled Up
SciGirls Connect

All organisms in an ecosystem depend on each other to survive; when one species starts to decline, multiple species may be affected because of the interconnectedness of life within the system.

Arizona Game and Fish Department: Focus Wild Arizona Activity Sheets - Crayfish
Arizona Game and Fish Department

In many parts of Arizona, rivers and lakes are rare.

Siemens STEM Day: Critical Critters
Siemens STEM Day

In this activity, students will observe animals that evoke fear and then map out their role in a food web.

Siemens STEM Day: Name That Connection
Siemens STEM Day

In this activity, students will take on the role of organisms in various environments as they discover the concept of interdependence in ecosystems.

Siemens STEM Day: Top Design
Siemens STEM Day

In this activity students will examine the relationships between the organisms within an ecosystem and how changes that affect one affect the others.

Siemens STEM Day: How Healthy is Your Ecosystem?
Siemens STEM Day

In this activity, students will learn about the importance of balance in an ecosystem.

Ologies: Phenology (FALL/SEASONS) with Dr. Libby Ellwood

It’s sweater weather in both hemispheres and seasonal researcher and expert Phenologist Dr. Libby Ellwood weighs in with amazing information about why fall smells so good, why leaves change color, why we like to cronch them, historical records of blossoms and twigs, bird migrations, Daylight Savings, seasonal mythbusting, pumpkin spice vs. apple cider, the best temperature to wear sweaters, why the Halloween aisle springs up in summer and how global temperature shifts affect the whole food web.

California Academy of Sciences: How Stable is Your Food Web?
California Academy of Sciences

Your students will design and use a simple model to test cause and effect relationships or interactions concerning the functioning of a marine food web, ranking their hypothetical ecosystems according to their stability when faced with a natural or man-made disturbance.