Life Science

Reading Levels

These books contain three developmentally appropriate reading levels for each grade span.

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Each level of the book conveys similar concepts, images, and vocabulary.
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Food Chains
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Food Chains

Every living thing is part of an ecosystem. Food chains, food webs, and energy pyramids can be helpful tools for understanding how the living things in an ecosystem depend on each other for the matter and energy they need to grow and perform daily activities. This unit helps students explore the roles that organisms play within an ecosystem, whether as producers, consumers, or decomposers. This unit explains the importance of predator-prey relationships and the differences among herbivores, carnivores, and omnivores. Students will learn about relationships among species as they compete for resources in order to survive. Finally, the unit explores ways that ecosystems can be threatened due to changes.

Unit Nonfiction Books

Book cover shows a food web that begins with green plants and ends with a hawk that has a snake in its beak.

Food Chains and Food Webs

low mid high

Lesson Resources

Project-Based Learning Packs

How Environmental Changes Affect Food Webs

Process Activities

FOCUS Books

Supporting Materials

Vocabulary Cards

Book Assembly

Single-Sided


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Double-Sided


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