1, straight line angle measurement experiment: measure the angle of a straight line with tools to understand the concept of angle and its measurement method.

2. Experiment on the sum of triangle internal angles: The origami experiment proves that the sum of triangle internal angles is equal to 180 degrees.

3. Parallel experiment: Experiment with straight lines and rotating bodies to observe the properties of parallel lines.

4. Triangle area experiment: calculate the area of triangle by calculating the product of base and height or by rounding.

5. Pi experiment: Calculate Pi by measuring the diameter and circumference of the circle.

Experiments are different from experiments. Experiment is a clear, concrete, operable, data-based, algorithmic and responsible technical operation for solving cultural, political, economic, social and natural problems and testing a new hypothesis, hypothesis, principle and theory or verifying an existing hypothesis, hypothesis, principle and theory in corresponding scientific research.

Usually, an experiment should presuppose the experimental purpose and environment, carry out the experimental operation, and finally publish the experimental results in the form of experimental report news.

Significance of experiment

Experimental design is an important link in the experiment, which is directly related to the success or failure of the experiment and the reliability of the experimental results. Experimental design needs to consider many factors, such as experimental purpose, experimental object, experimental conditions, experimental process, experimental methods and so on, to ensure the controllability, repeatability and comparability of the experiment.

The significance of the experiment is to construct the experimental design according to the purpose and goal of the experiment, so as to achieve the expected research effect. For example, in drug research and development, experimental design needs to consider factors such as curative effect, disease type and medication method to evaluate the efficacy and safety of drugs.

In materials science, the composition, structure and physical and chemical properties of materials need to be considered in experimental design to evaluate the properties and application fields of materials. Experimental analysis is the process of processing and interpreting experimental data, and its main purpose is to improve the credibility and scientificity of the data.