Representation of Decimal Numbers: Visualizing Decimal Expansion on a Number Lin

This GeoGebra example dynamically illustrates the decimal representation of numbers on a number line, showing how integers, tenths, hundredths, and other place values correspond to specific points. The core mathematical concepts include place value, decimal expansion, the correspondence between real numbers and points on a number line, and representation of positive and negative decimals. Construction details: the example uses Line and Segment commands to build the number line, Random to generate random values, Corner for positioning, and Polygon for auxiliary shapes. Numerous objects include text labels (p1texto1, p1texto2, etc.), buttons (p1botón1, p1botón2), and a large set of points (A_0 through A_9, A_{-1} through A_{-9}, A_6décimas, A_5décimas) to mark decimal positions. This resource is suitable for upper elementary or early middle school students learning decimals, and for teachers demonstrating the relationship between decimals and fractions on a continuous number line.