Oceans 2: Predator, Prey, and Food Chains
Grade 1 objective: Identify predator and prey. Grade 3 objective: Identify and model a simple food chain.
Time: 2–3 sessions Subjects: Science, Reading, Art, Speaking
Learning Objectives
- Use the terms predator and prey correctly in simple examples.
- Represent the direction of energy transfer in a simple food chain.
- Use a reliable source to support an animal-behavior statement.
- Explain that food chains describe feeding relationships rather than every relationship in an ecosystem.
Materials
Ocean animal photographs or cards; books or teacher-selected reliable wildlife sources; chart paper; paper; crayons; arrows or string for food-chain models.
Procedure
- Introduce: Show a simple example such as fish eaten by a larger fish. Explain predator and prey using the specific example.
- Observe: Students examine several ocean animals and predict possible feeding relationships. Check predictions against a reliable source rather than treating every guess as fact.
- Build: Small groups arrange three or four organisms into a simple food chain and add arrows showing the feeding relationship. Younger students may use pictures only.
- Research: Each group chooses one chain and records one fact about each organism.
- Present: Students explain their chain to the class. Older students explain what might happen if one organism became less common.
Assessment
Grade 1: correctly identify predator and prey in several picture examples. Grade 3: construct and explain a simple food chain with correctly directed arrows.
Differentiation
Provide picture cards, pre-selected sources, vocabulary frames, and partially completed chains. Students may present orally, point to cards, or record a short explanation.
Extension
Compare two chains that share an organism and discuss why real ecosystems contain interconnected food webs.