In this lesson, students understand the interactions between organisms living in an environment, and how energy flows from one organism and trophic level to another.

This article describes some common misconceptions that elementary students may have about biomes and ecosystems. It also includes suggestions for formative assessment and teaching for conceptual change.

In this lesson, students explore the Moon's habitability and sustainable resources with activities that culminate with plans for the design and creation of a lunar station.

In this lesson, students diagram the flow of energy through living systems, including food chains, food webs, and energy pyramids.

 This resource provides a lesson plan over 3 class periods centered around food chains and food webs in an ecosystem. Students will participate in a variety of digital and non-digital activities to master content such as parts of food chains and food webs, types of producers and consumers, and the interdependency of organisms in an ecosystem. 

Students participate in a simulation of a Shark Bay food web to view the relationships between members of that ecosystem.

This article highlights hands-on or multimedia lesson plans about the tundra and ecosystem concepts. Science lessons are paired with suggested literacy lesson plans. All lessons are aligned to national standards.

This video introduces a variety of zoo- and phytoplankton species, showing the interactions between them, including predator-prey. Discussion/assessment questions and suggested supplemental resources are included.

This article assembles free resources from the Tundra: Life in the Polar Extremes issue of the Beyond Penguins and Polar Bears cyberzine into a unit outline based on the 5E learning cycle framework. Outlines are provided for Grades K-2 and 3-5.

This article features children's literature about the tundra, food chains, and food webs.

This encyclopedia entry is for the term "autotroph." An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers. Text for this entry is appropriate for the middle and high school grade levels.

This is an encyclopedia entry for the term "carnivore." A carnivore is an organism that mostly eats meat, or the flesh of animals. Sometimes carnivores are called predators. Text for this entry is appropriate for upper elementary, middle, and high school grade levels.

This encyclopedia entry is for the term "food chain." A food chain describes who eats whom in the wild. Text for this entry is appropriate for the upper elementary, middle and high school grade levels.

This is an encyclopedia entry for the term "herbivore." An herbivore is an organism that mostly feeds on plants. Text for this entry is appropriate for the upper elementary, middle, and high school grade levels.

This is an encyclopedia entry for the term "omnivore." An omnivore is an organism that regularly consumes a variety of material, including plants, animals, algae, and fungi. Text for this entry is appropriate for upper elementary, middle, and high school grade levels.