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The Scientific Method

Third graders learn how scientists turn a question into an answer, step by step, from a first wondering to a tested conclusion, and put the steps of the scientific method in order.

Grade 3The Scientific Method40 minutes1 class period5E ModelExplicit teaching4 StandardsCommon Core
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Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓Name the steps in order.
  • ✓Write a testable question.
  • ✓Make a hypothesis.
  • ✓Order the method.
Essential Question

A scientist and a curious kid both start the same way: with a question. How do scientists move from a question to a trustworthy answer, one step at a time?

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Lesson Phases
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Vocabulary Terms
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Standards Aligned
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Interactive Task
Order the Steps · Interactive

Order the Steps

Project this and put the steps of the scientific method in order — tap each one from asking a question to drawing a conclusion.

🔬 Put the steps of the scientific method in orderTry it
Tap the steps in order, starting with a question.
The Lesson · 5E Model

40 minutes, five moves

Tap any phase to open the teacher moves and student actions.

1

Hook — How Do Scientists Find Out?

5 min

You wonder whether plants grow taller in sunlight or shade. How would a scientist turn that question into an answer?

👩‍🏫 Teacher Moves

  • Pose a wondering.
  • Ask how to find out.
  • Set the goal.

🎒 Student Actions

  • Think.
  • Share.
  • Get ready.
2

Use — Order the Steps

12 min

Students put the scientific method in order.

👩‍🏫 Teacher Moves

  • Send students to Order the Steps.
  • Order the steps.
  • Name each one.

🎒 Student Actions

  • Order.
  • Say.
  • Note it.
3

Modify — Try a Question

13 min

Students apply the steps to a question.

👩‍🏫 Teacher Moves

  • Pick something to test.
  • Write a question and a hypothesis.
  • Plan a fair test.

🎒 Student Actions

  • Pick.
  • Write.
  • Plan.
4

Create — My Investigation

15 min

Students plan a simple investigation.

👩‍🏫 Teacher Moves

  • Choose a question.
  • Write each step of the method.
  • Predict the result.

🎒 Student Actions

  • Choose.
  • Write.
  • Predict.
5

Reflect — Thinking Like a Scientist

5 min

Students reflect on the method.

👩‍🏫 Teacher Moves

  • What comes right after a question?
  • Why do scientists record results?
  • Complete the exit ticket.

🎒 Student Actions

  • Say it.
  • Say it.
  • Complete the exit ticket.
Standards Alignment

Built to the standards you report on

Aligned to Next Generation Science Standards and Common Core literacy. State-standard crosswalks available on request.

NGSS
3-PS2-1

Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.

NGSS
3-LS4-3

Construct an argument with evidence that in a particular habitat some organisms can survive well, some less well, and some cannot survive at all.

NGSS
5-PS1-4

Conduct an investigation to determine whether the mixing of two or more substances results in new substances.

CCSS
W.3.7

Conduct short research projects that build knowledge about a topic.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Step picture cards.
  • Sentence frame: “First I ___ , then I ___ .”
  • Order two steps at a time.

Support & Access

IEP / 504
  • Start with question and conclusion.
  • Walk through one real example together.
  • Add one step at a time.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Add a variable and a control.
  • Design a full fair test.
  • Explain why results must be repeatable.
Materials

What to gather

  • 📽️Projector / board
  • 🗂️Step cards
  • 💻Order the Steps
  • 🌱Simple test materials
  • ✏️Pencils
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

scientific methodthe step-by-step way scientists answer questionsquestionsomething you wonder about and want to find outhypothesisa possible answer you can testexperimenta fair test done to check a hypothesisobserveto watch closely and notice what happensrecordto write down or draw what you observeconclusionwhat you decide after looking at your resultsfair testa test that changes only one thing at a time
Evaluate

Exit Ticket

Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.

QUESTION 1
What step comes right after you ask a question?
You make a hypothesis, a possible answer you can test.
QUESTION 2
Why do scientists record their results?
So they can look back at what really happened and use the evidence to draw a conclusion.
QUESTION 3
What do you do in the last step of the scientific method?
You draw a conclusion from your results and share what you learned.

Create: my investigation.

Have students choose a question, write out each step of the method, and predict the result, so the steps become a plan they can actually follow. A printable scientific-method worksheet is in the Science library.

Study · Flashcards

Study the key terms

Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.

🃏 The Scientific MethodFlip
Card 1
Term
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Meaning
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Practice · Quiz

Check your understanding

A quick self-check with instant feedback, drawn from this lesson’s key terms.

📝 The Scientific MethodQuiz
Score: 0
1 / 6
Question 1
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Practice · Worksheet

Printable worksheet

A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.

🖨️ The Scientific MethodPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: conclusion, experiment, fair test, hypothesis, observe, question, record, scientific method
  1. a fair test done to check a hypothesis
  2. to watch closely and notice what happens
  3. what you decide after looking at your results
  4. a test that changes only one thing at a time
  5. a possible answer you can test
  6. to write down or draw what you observe
  7. the step-by-step way scientists answer questions
  8. something you wonder about and want to find out

Part B · Show what you learned

  1. What step comes right after you ask a question?
  2. Why do scientists record their results?
  3. What do you do in the last step of the scientific method?
Answer key — Part A: 1) experiment · 2) observe · 3) conclusion · 4) fair test · 5) hypothesis · 6) record · 7) scientific method · 8) question
Part B: 1) You make a hypothesis, a possible answer you can test. 2) So they can look back at what really happened and use the evidence to draw a conclusion. 3) You draw a conclusion from your results and share what you learned.