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Science lesson plan Β· 5th grade (Year 6 in England) Β· 60 minutes

Read a food web: who eats whom?

Ecosystems and food chains

CCSS NGSS.5-LS2-1England: KS2 Y4 Living things and their habitatsEngland: KS3 Biology: Interactions and interdependencies

Objective and success criteria

Students will: Read a food web: who eats whom?.

  • I can answer questions on today's skill on my own, without help.
  • I can explain each step and say why it works.
  • I can check my answer and spot a mistake.

Before and after

Needs first: Producers, consumers, predators and prey

Leads to: Predict what happens when a food web changes

Materials: Food web cards, Arrows to build chains, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up Β· 6 min

  • Quick retrieval from earlier learning (Producers, consumers, predators and prey). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. seeds β†’ mouse β†’ owl What is the mouse in this food chain? (primary consumer / secondary consumer / tertiary consumer / producer) β†’ primary consumerPrompt: Start at the plant and count the arrows.
  2. grass β†’ zebra β†’ lion Which animal is the predator of the zebra? (lion / grass / zebra) β†’ lionPrompt: A predator hunts and eats other animals; its prey is the animal it eats.
  3. Food chains: which statement is true? (A food chain can start with a lion. / Herbivores are predators. / Producers eat consumers. / Plants are producers because they make their own food.) β†’ Plants are producers because they make their own food.Prompt: Producers make food; consumers eat.

Hook Β· 6 min

  • Show a food web and ask what would happen if one animal disappeared.
  • Share the objective: Read a food web: who eats whom?. Read the success criteria together.

I do: model it Β· 12 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: Here is a pond food web. (An arrow points from the food to the animal that eats it.) algae β†’ mayfly larva algae β†’ tadpole pondweed β†’ pond snail algae β†’ pond snail mayfly larva β†’ dragonfly larva tadpole β†’ dragonfly larva mayfly larva β†’ stickleback (small fish) dragonfly larva β†’ stickleback (small fish) stickleback (small fish) β†’ heron tadpole β†’ heron Which of these does the heron eat?
  • Step 1: tadpole β†’ heron
  • Step 2: So the answer is: tadpole
  • Answer: tadpole
  • Pause after each step and ask a student to say what comes next.

We do: guided practice Β· 12 min

  • Do these together. Students try each step on whiteboards before you reveal it.
  • Use the hints as prompts rather than giving the answer.
  1. Here is a pond food web. (An arrow points from the food to the animal that eats it.) algae β†’ mayfly larva algae β†’ tadpole pondweed β†’ pond snail algae β†’ pond snail mayfly larva β†’ dragonfly larva tadpole β†’ dragonfly larva mayfly larva β†’ stickleback (small fish) dragonfly larva β†’ stickleback (small fish) stickleback (small fish) β†’ heron tadpole β†’ heron Which of these does the heron eat? (pond snail / tadpole / dragonfly larva / algae) β†’ tadpolePrompt: Find the arrows that point TO this animal.
  2. Here is a woodland food web. (An arrow points from the food to the animal that eats it.) oak tree β†’ caterpillar grass β†’ rabbit oak tree β†’ mouse grass β†’ mouse caterpillar β†’ blue tit rabbit β†’ fox mouse β†’ fox mouse β†’ owl blue tit β†’ owl How many different animals in this web eat the caterpillar? β†’ 1Prompt: Count the arrows that start at this living thing.

You do: independent practice Β· 17 min

  • Students work on the student sheet. Circulate and check the first two answers of every student early.
  • Students who finish: write a question of their own for a partner, with the answer.

The 8 questions are on the student sheet below, with answers in the key.

Exit ticket Β· 7 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. Here is an ocean food web. (An arrow points from the food to the animal that eats it.) phytoplankton β†’ zooplankton kelp (seaweed) β†’ sea urchin zooplankton β†’ herring sea urchin β†’ sea otter herring β†’ seal seal β†’ orca herring β†’ orca Which of these is a producer? (herring / seal / orca / phytoplankton) β†’ phytoplanktonPrompt: Producers make their own food from sunlight.
  2. Here is an ocean food web. (An arrow points from the food to the animal that eats it.) phytoplankton β†’ zooplankton kelp (seaweed) β†’ sea urchin zooplankton β†’ herring sea urchin β†’ sea otter herring β†’ seal seal β†’ orca herring β†’ orca A disease kills most of the phytoplankton. Which animal loses one of its foods? (orca / zooplankton / seal / sea urchin) β†’ zooplanktonPrompt: Which animals have an arrow coming from it?

Watch out for

  • Everyday meanings of words getting in the way of the science meaning: define key words explicitly.
  • Remembering facts without the reason: ask "why?" and "what is the evidence?"

Support and stretch

Support

  • Review first: Producers, consumers, predators and prey.
  • Use concrete materials: food web cards.
  • Give the first step of each question, or a partly worked example to finish.
  • Pair with a confident partner for the guided practice.

Stretch

  • Move on to: Predict what happens when a food web changes.
  • Explain a common mistake in writing and how to fix it.
  • Write a word problem that uses today's skill, then solve a partner's.

Homework and more practice

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-5.

Free lesson plan from eurekami.com/lesson-plan-builder

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Read a food web: who eats whom?

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Date

Score/ 8

  1. Question 1

    Here is a woodland food web. (An arrow points from the food to the animal that eats it.) oak tree β†’ caterpillar grass β†’ rabbit oak tree β†’ mouse grass β†’ mouse caterpillar β†’ blue tit rabbit β†’ fox mouse β†’ fox mouse β†’ owl blue tit β†’ owl A disease kills most of the mouse. Which animal loses one of its foods?

    • A. owl
    • B. caterpillar
    • C. rabbit
    • D. blue tit
  2. Question 2

    Here is a pond food web. (An arrow points from the food to the animal that eats it.) algae β†’ mayfly larva algae β†’ tadpole pondweed β†’ pond snail algae β†’ pond snail mayfly larva β†’ dragonfly larva tadpole β†’ dragonfly larva mayfly larva β†’ stickleback (small fish) dragonfly larva β†’ stickleback (small fish) stickleback (small fish) β†’ heron tadpole β†’ heron Which of these does the mayfly larva eat?

    • A. algae
    • B. dragonfly larva
    • C. heron
    • D. pondweed
  3. Question 3

    Here is an ocean food web. (An arrow points from the food to the animal that eats it.) phytoplankton β†’ zooplankton kelp (seaweed) β†’ sea urchin zooplankton β†’ herring sea urchin β†’ sea otter herring β†’ seal seal β†’ orca herring β†’ orca Which of these is a producer?

    • A. seal
    • B. phytoplankton
    • C. orca
    • D. sea urchin
  4. Question 4

    Here is a pond food web. (An arrow points from the food to the animal that eats it.) algae β†’ mayfly larva algae β†’ tadpole pondweed β†’ pond snail algae β†’ pond snail mayfly larva β†’ dragonfly larva tadpole β†’ dragonfly larva mayfly larva β†’ stickleback (small fish) dragonfly larva β†’ stickleback (small fish) stickleback (small fish) β†’ heron tadpole β†’ heron A disease kills most of the mayfly larva. Which animal loses one of its foods?

    • A. pond snail
    • B. stickleback (small fish)
    • C. heron
    • D. tadpole
  5. Question 5

    Here is a pond food web. (An arrow points from the food to the animal that eats it.) algae β†’ mayfly larva algae β†’ tadpole pondweed β†’ pond snail algae β†’ pond snail mayfly larva β†’ dragonfly larva tadpole β†’ dragonfly larva mayfly larva β†’ stickleback (small fish) dragonfly larva β†’ stickleback (small fish) stickleback (small fish) β†’ heron tadpole β†’ heron Which of these does the stickleback (small fish) eat?

    • A. dragonfly larva
    • B. pond snail
    • C. heron
    • D. tadpole
  6. Question 6

    Here is a woodland food web. (An arrow points from the food to the animal that eats it.) oak tree β†’ caterpillar grass β†’ rabbit oak tree β†’ mouse grass β†’ mouse caterpillar β†’ blue tit rabbit β†’ fox mouse β†’ fox mouse β†’ owl blue tit β†’ owl Which of these is a producer?

    • A. fox
    • B. owl
    • C. blue tit
    • D. grass
  7. Question 7

    Here is an ocean food web. (An arrow points from the food to the animal that eats it.) phytoplankton β†’ zooplankton kelp (seaweed) β†’ sea urchin zooplankton β†’ herring sea urchin β†’ sea otter herring β†’ seal seal β†’ orca herring β†’ orca A disease kills most of the herring. Which animal loses one of its foods?

    • A. sea urchin
    • B. zooplankton
    • C. sea otter
    • D. seal
  8. Question 8

    Here is an ocean food web. (An arrow points from the food to the animal that eats it.) phytoplankton β†’ zooplankton kelp (seaweed) β†’ sea urchin zooplankton β†’ herring sea urchin β†’ sea otter herring β†’ seal seal β†’ orca herring β†’ orca Which of these does the sea urchin eat?

    • A. seal
    • B. kelp (seaweed)
    • C. phytoplankton
    • D. zooplankton

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Answer key: Read a food web: who eats whom?

  1. 1. A. owl

  2. 2. A. algae

  3. 3. B. phytoplankton

  4. 4. B. stickleback (small fish)

  5. 5. A. dragonfly larva

  6. 6. D. grass

  7. 7. D. seal

  8. 8. B. kelp (seaweed)