Fractions on a Number Line: Interactive Visualization

This GeoGebra example demonstrates how fractions are placed on a number line, showing unit intervals, numerator/denominator relationships, improper fractions, and mixed-number representations. It covers fraction meaning, number-line coordinates, unit fractions, equal partitioning, scaling, and conversion between improper fractions and mixed numbers. The construction uses Point and Sequence to create tick points and fractional divisions, Vector and arrowlength to draw indicator arrows, and objects such as numerator, denominator, numberofwholes, totaldots, and denomsize to control values. Mod and Element manage cyclic lists list1/list2, while numeratorup/down, denominatorup/down, setfraction, zoomadd/subtract provide interactive adjustment and zooming; fractionlabelonnumberline, mixedwhole, mixednumerator, and answermixed display labels and mixed-number results. It is suitable for upper elementary and middle school fraction instruction, number-line activities, and GeoGebra lesson development.