The Scientific Method: Experiment Like a Scientist
Ask. Guess. Test. Learn. Repeat.
Ask. Guess. Test. Learn. Repeat.
The scientific method is a loop, not a straight line. Scientists cycle through these steps, refining their understanding with each pass. Click each step to learn more.
The scientific method was not invented by one person. It evolved over centuries, with contributions from Aristotle, Ibn al-Haytham, Galileo, Bacon, and many others.
Let's walk through the full scientific method with a simple question: Does the mass of an object affect how fast it falls?
What do you think will happen? Pick your prediction:
Every experiment has three types of variables. Understanding them is what separates a real experiment from just messing around.
The one thing you change on purpose. In our drop test: mass.
The thing you measure. In our drop test: fall time.
Everything you keep the same. In our drop test: height, air resistance, starting velocity.
In 1971, astronaut David Scott dropped a hammer and a feather on the Moon. With no air, they hit the ground at exactly the same time, confirming Galileo's 400-year-old prediction on live TV.
Our brains are wired to see patterns even when they are not there. Good scientists watch for these traps. Click each card to learn about common pitfalls.
Noticing evidence that supports your hypothesis while ignoring evidence that contradicts it. The most common trap in science.
Drawing conclusions from too few trials. Flipping heads three times does not prove a coin is rigged.
Ice cream sales and drownings both rise in summer. Ice cream does not cause drowning. They share a cause: hot weather.
Without a baseline to compare against, you cannot tell if your experiment actually did anything.
You've walked through the same process that every scientist uses, from a curious question to a tested conclusion. Science is not about being right on the first try. It is about learning from every result.
Every discovery starts by noticing something and asking "why?" or "what if?"
A hypothesis is a testable prediction. It is not wrong to be wrong. It is wrong not to test.
Change one thing at a time. Keep everything else the same. That is how you know what caused the result.
Collect measurements, look for patterns, and let the numbers guide your conclusion, not the other way around.
Put your new knowledge into practice!