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The Scientific Method & Science Fair Projects

What you'll be able to do
  • Use the steps of the scientific method to answer your own questions.
  • Turn a big curious question into a testable one, with a clear hypothesis.
  • Design a fair test with independent, dependent and controlled variables.
  • Record data in a table, average repeated trials and draw a graph.
  • Write an honest conclusion, including what went wrong.
  • Plan a science fair project that follows your fair's safety and ethics rules (with Canadian fairs as the example), and present it to judges.

Safety rule for this course: every experiment here uses safe household materials (water, paper, plants, balloons, food colouring, baking soda and vinegar). Warm tap water only, never boiling. Kids: do experiments with an adult.

Words in this course 28Open the Vocabulary Hall
01

What the scientific method is

In simple words

The scientific method is a way of finding out what's true by testing, not guessing. It's like being a detective: you notice a clue, make a guess, test your guess, and see if the clues agree.

Key facts
  • Britannica describes the scientific method as the technique used to build and test a hypothesis.
  • Common steps: 1. Observe and ask a question. 2. Do background research. 3. Make a hypothesis. 4. Test it with an experiment. 5. Analyze the data. 6. Draw a conclusion. 7. Share your results.
  • Real science is not always a straight line. If the data don't support your hypothesis, you make a new one and test again. That is not failure; it's how science moves forward.
  • Marie Curie used careful experiments to study radioactivity. She shared the 1903 Nobel Prize in Physics (with Pierre Curie and Henri Becquerel) and won the 1911 Nobel Prize in Chemistry for discovering the elements radium and polonium. She was the first woman to win a Nobel Prize and is the only person to win Nobel Prizes in two different sciences.
Step by step
  1. Do the experiments in this course with an adult if you are a kid.
  2. Get a notebook or open a notes app.
  3. Write five "I wonder..." questions about things you see every day, for example "I wonder why bread goes mouldy faster in summer."
  4. Circle the one you are most curious about.
  5. Write the seven steps of the scientific method: observe and ask, research, hypothesis, experiment, analyze data, conclusion, share.
  6. Next to your circled question, write which step you are on now.
  7. Check: you have five questions, one circled, and you can say the seven steps in order.
Watch on YouTube
The scientific method: what is science? How do I do my own experiments?CSU Spur · YouTube · youtube.com
The genius of Marie CurieTED-Ed · YouTube · youtube.com

Videos by other creators on YouTube, for reference. They are not made by or affiliated with The Future Market.

LESSON 01What the scientific method is
LESSON 01 / ANIMATED LESSON / AI VOICE00:00 / 01:00
Read the video script
[Host] "Scientists aren't people who know everything. They're people who test things."
[Text on screen: Question > Research > Hypothesis > Experiment > Analyze > Conclude > Share] "Ask, research, guess, test, look, decide, share."
[Screen: archive photo of Marie Curie in her lab] "Marie Curie tested and measured so carefully that she won two Nobel Prizes, in physics and in chemistry."
[Host] "Wrong guess? Great. Now you know something new. Test again."
Try it now

Write down five "I wonder..." questions about things you see every day (for example: "I wonder why bread goes mouldy faster in summer"). Circle the one you're most curious about.

ClaudeStuck? Copy a ready-made prompt for Claude

Copy this, open Claude, paste it, and Claude will walk you through the lesson step by step.

For a grown-up: Claude is for adults (18+). Copy this, paste it into Claude, and use the answer to explain the lesson to your child.

I'm learning "The Scientific Method & Science Fair Projects" on The Future Market. Lesson 1: "What the scientific method is".

What the lesson teaches:
- Britannica describes the scientific method as the technique used to build and test a hypothesis.
- Common steps: 1. Observe and ask a question. 2. Do background research. 3. Make a hypothesis. 4. Test it with an experiment. 5. Analyze the data. 6. Draw a conclusion. 7. Share your results.
- Real science is not always a straight line. If the data don't support your hypothesis, you make a new one and test again. That is not failure; it's how science moves forward.
- Marie Curie used careful experiments to study radioactivity. She shared the 1903 Nobel Prize in Physics (with Pierre Curie and Henri Becquerel) and won the 1911 Nobel Prize in Chemistry for discovering the elements radium and polonium. She was the first woman to win a Nobel Prize and is the only person to win Nobel Prizes in two different sciences.

The exercise I'm working on:
Write down five "I wonder..." questions about things you see every day (for example: "I wonder why bread goes mouldy faster in summer"). Circle the one you're most curious about.

I'm stuck. Please:
1. Explain the main idea in plain, simple words with one everyday example.
2. Walk me through the exercise one small step at a time. Ask me what I've done so far before giving the next step.
3. Don't just give me the final answer. Help me do it myself, and check my work when I share it.
I'm a parent helping my child (about 8 years old) with a lesson called "What the scientific method is" from the course "The Scientific Method & Science Fair Projects".

Here's what the lesson says:
The scientific method is a way of finding out what's true by testing, not guessing. It's like being a detective: you notice a clue, make a guess, test your guess, and see if the clues agree.

The activity:
Write down five "I wonder..." questions about things you see every day (for example: "I wonder why bread goes mouldy faster in summer"). Circle the one you're most curious about.

Please explain this so an 8-year-old understands: short sentences, a fun everyday example, and no hard words.
Then give me 3 simple questions I can ask my child to check they understood, and a way to do the activity together, one tiny step at a time.
Open Claude
Sources
My notes
02

A testable question and a good hypothesis

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03

Variables and the fair test

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04

Collecting data, averages and graphs

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05

Conclusions, errors and honesty

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06

Science fairs: safety and ethics rules (with Canadian examples)

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07

Your display board and talking to judges

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++

Final project

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??

Quiz

  1. What is a hypothesis?

  2. What is the independent variable?

  3. What is the dependent variable?

  4. What are controlled variables?

  5. Why repeat trials at least 3 times?

  6. Trials of 62, 58 and 60 seconds give what average?

  7. Your data don't support your hypothesis. Is your project a failure?

  8. Should you ever change data that look wrong?

  9. Which two Nobel Prizes did Marie Curie win?

  10. Where can you find the rules, dates and place of the science fair you can enter?

  11. Where do you find the dates and place of the next national or regional science fair?

  12. Your project is a taste test with classmates. What must you check first?

EX

Final exam

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CE

Certificate

This lesson is part of full access: every course and every level for one payment.