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Science lesson plan · 3rd grade (Year 4 in England) · 45 minutes

Compare fossils with living plants and animals

Earth and rocks

CCSS NGSS.3-LS4-1England: KS2 Y6 Evolution and inheritanceEngland: KS2 Y3 Rocks

Objective and success criteria

Students will: Compare fossils with living plants and animals.

  • 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: How fossils form

Leads to: the next skill in this area.

Materials: Rock samples, Hand lenses, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up · 5 min

  • Quick retrieval from earlier learning (How fossils form). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. In how a sea shell becomes a fossil, what happens straight after "its shell sinks to the sea floor"? (layers of sediment cover it / the sediment slowly turns into rock / a sea creature dies / the fossil is found in the rock millions of years later) → layers of sediment cover itPrompt: Fossils form very slowly, buried in rock.
  2. In which type of rock are fossils usually found? (igneous / sedimentary / lava / metamorphic only) → sedimentaryPrompt: This rock forms from layers of mud and sand.
  3. In how a fossil forms, what happens straight after "an animal dies"? (minerals slowly replace the bones over millions of years / it is quickly buried by mud or sand / the rock is worn away and the fossil is uncovered / the soft parts rot away) → it is quickly buried by mud or sandPrompt: Only the hard parts usually become fossils.

Hook · 5 min

  • Pass round different rocks and ask how each one might have formed.
  • Share the objective: Compare fossils with living plants and animals. Read the success criteria together.

I do: model it · 10 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: Which living thing is most similar to this fossil: woolly mammoth?
  • Step 1: Both have trunks and tusks; mammoths had long hair for cold climates.
  • Step 2: So the answer is: elephant
  • Answer: elephant
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 10 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. Which living thing is most similar to this fossil: fossil ginkgo leaf? (the ginkgo tree / nautilus / dragonflies today / modern birds) → the ginkgo treePrompt: Look for a shared feature: trunk, shell, wings, teeth or leaf shape.
  2. Archaeopteryx fossils show feathers AND teeth. What does this suggest? (It was a kind of fish. / Birds have always had teeth. / Feathers are made of teeth. / Birds are related to reptiles such as dinosaurs.) → Birds are related to reptiles such as dinosaurs.Prompt: Which living animals have feathers, and which have teeth like this?

You do: independent practice · 10 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 · 5 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. Which living thing is most similar to this fossil: fossil ginkgo leaf? (nautilus / modern birds / the ginkgo tree / elephant) → the ginkgo treePrompt: Look for a shared feature: trunk, shell, wings, teeth or leaf shape.
  2. What does "extinct" mean? (It is asleep for the winter. / It has moved to another country. / It lives only in zoos. / No members of that kind of living thing are alive anywhere.) → No members of that kind of living thing are alive anywhere.Prompt: Can we see a living Tyrannosaurus anywhere?

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: How fossils form.
  • Use concrete materials: rock samples.
  • Give the first step of each question, or a partly worked example to finish.
  • Pair with a confident partner for the guided practice.

Stretch

  • 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-3.

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

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Compare fossils with living plants and animals

Name

Date

Score/ 8

  1. Question 1

    Archaeopteryx fossils show feathers AND teeth. What does this suggest?

    • A. Birds are related to reptiles such as dinosaurs.
    • B. Feathers are made of teeth.
    • C. It was a kind of fish.
    • D. Birds have always had teeth.

  2. Question 2

    True or false? Comparing fossils with living things helps show how life has changed.

    • A. True
    • B. False

  3. Question 3

    Which living thing is most similar to this fossil: fossil ginkgo leaf?

    • A. nautilus
    • B. elephant
    • C. the ginkgo tree
    • D. lions and tigers

  4. Question 4

    How is a woolly mammoth different from an elephant today?

    • A. It could fly.
    • B. It had no trunk.
    • C. It had thick, long hair and small ears for cold weather.
    • D. It lived in the sea.

  5. Question 5

    True or false? Dinosaurs and people lived at the same time.

    • A. True
    • B. False

  6. Question 6

    Which living thing is most similar to this fossil: woolly mammoth?

    • A. the ginkgo tree
    • B. modern birds
    • C. elephant
    • D. lions and tigers

  7. Question 7

    What does "extinct" mean?

    • A. It is asleep for the winter.
    • B. It lives only in zoos.
    • C. No members of that kind of living thing are alive anywhere.
    • D. It has moved to another country.

  8. Question 8

    True or false? Ammonites are still common in today's seas.

    • A. True
    • B. False

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Answer key: Compare fossils with living plants and animals

  1. 1. A. Birds are related to reptiles such as dinosaurs.

  2. 2. A. True

  3. 3. C. the ginkgo tree

  4. 4. C. It had thick, long hair and small ears for cold weather.

  5. 5. B. False

  6. 6. C. elephant

  7. 7. C. No members of that kind of living thing are alive anywhere.

  8. 8. B. False