Basic Percent Exercises: Random Sampling and Confidence Interval Visualization

This GeoGebra example demonstrates hands-on percent (percentage) exercises where results change under different user inputs and where statistical variability is illustrated via random sampling. It focuses on converting between percentages and proportions, understanding basic statistical characteristics, and interpreting ideas behind confidence intervals (confidence interval) in a visual, interactive way. Construction highlights include using Sequence to generate the computational/display sequences, RandomElement to simulate different random samples, and Textfield/InputBox1–InputBox3 controls to let learners vary parameters and conditions. The If command drives conditional logic so that displayed text and computed outcomes update correctly. Supporting objects like lists (l1, l2) and multiple dynamic text fields (text1–text6) are used to present the percentage transformations and resulting statistics. Suitable for middle school to early university learners, for classroom demonstrations, and for interactive practice on arithmetic percentages and introductory probability & statistics.