Normal Distribution Density Curve Animation

① This example dynamically displays the probability density curve of a normal distribution, allowing users to vary the mean μ and standard deviation σ to see how the curve changes. ② Core mathematical concepts include the normal distribution, probability density function, mean and standard deviation, and the calculation of area under the curve (confidence intervals). ③ Construction highlights: GeoGebra's Segment command creates interval endpoints A and B; the Integral command computes the definite integral of function f over [a, b]; sliders control parameters μ and σ; function object f defines the density; text objects text1, text2, text3 label parameters and the resulting area. ④ Suitable for high‑school statistics electives, undergraduate probability and statistics courses, and self‑learners seeking an intuitive grasp of normal distribution properties.