How to do scientific experiments?

1. Choose a specific topic: Scientific knowledge is based on the data accumulated by countless experiments, and choose a specific topic or unsolved problem in a very small measurable range.

2. Separation of variables: A scientific experiment is to test specific and measurable parameters called variables.

3. Propose a hypothesis: Hypothesis is essentially a prediction of the experimental results, not a wild guess-the appropriate hypothesis should be the hypothesis obtained through background investigation when choosing the experimental topic.

4. Plan to collect data: It is very important to collect data regularly, so try to follow the plan. If it is found that the results have changed, the possibility of change caused by different time limits can be ruled out.

5. methodical experiment: methodical experiment, experiment and test variables, which almost requires you to experiment many times and get multiple values. In the chemical experiment, we will plant several identical corn trees and apply fertilizers with different nitrogen contents.

Generally speaking, the more data you collect, the better, and record as much data as possible. Excellent experimental design contains so-called control factors.

6. Data collection: record the experimental data directly on the table, saving time and effort for later saving and summarizing the data. To know how to evaluate the abnormal value of data, it is best to show the experimental data as intuitively as possible.