Virginia SOL 4.7.c

Science4th GradeEarth and Space Systems

The Standard

interaction of organisms in the ocean.

Virginia Standards of Learning for Science

Teacher's field guide

What Students Need to Do: Students explain how ocean plants and animals depend on one another for food, shelter, and survival. They use examples to describe predator-prey relationships, competition, and cooperation.
What Mastery Looks Like: Students can build an ocean food web and trace how energy moves through it. They can predict how one population change may affect other organisms.
Common Misconceptions: Students may think all large ocean animals are predators or that seaweed gets food from other organisms. They may also treat a food web as separate chains instead of connected relationships.
How to Assess It: Give students cards labeled phytoplankton, krill, fish, seal, and orca. Ask them to draw a food web and explain what might happen if krill declined.

Lesson moves

Give groups ocean organism cards and yarn, then have them build a connected food web showing who eats whom.
Ask students to explain in writing how fewer sea otters could affect sea urchins and kelp.
Play a matching game in which students pair ocean organisms with predators, prey, competitors, or helpful partners.
Examine a coral reef photo and identify three ways organisms use the reef for food, shelter, or protection.

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A ready-to-print activity worksheet aligned to 4.7.c, with an answer key for the teacher on its own page. No account needed.

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