What is the scientific method?
The scientific method is a step-by-step way of investigating questions: observe, ask a question, form a hypothesis, test it with experiments, analyze the results and draw conclusions.
It usually starts with an observation, such as noticing that bread goes moldy faster in some places. A scientist asks a question, forms a hypothesis and designs a fair experiment, changing only one factor, called the independent variable, while keeping others constant. Results are measured, recorded and analyzed.
If results support the hypothesis, scientists may run more tests. If not, they revise their ideas. Findings are shared with other scientists, often through peer-reviewed journals, where experts check the methods and conclusions. Other researchers try to repeat the experiments to confirm the results.
Why it matters
The scientific method helps reduce bias and mistakes, making knowledge more reliable. It is not always a rigid sequence, and real research often loops back and forth between steps. Thinkers such as Francis Bacon, Galileo Galilei and Ibn al-Haytham helped develop the experimental approach.
Did You Know?
Ibn al-Haytham, an Arab scientist born around 965, carried out careful experiments on light and vision and is often called an early pioneer of the scientific method.