In this research the researchers wanted to illustrate the physical materials about the Lissajous curve which is often taught by teachers in physics learning. This Lissajous curve is illustrated using a spreadsheet program on a computer or laptop. The advantages of spreadsheet programs that researchers use has a function as a program to process data in the form of numbers and can also be used to display graphics or curves more dynamic. Therefore, by using a program in a computer or laptop that is a spreadsheet program, it can easily and effectively process and display data in the form of numbers and graphic images simultaneously. Meanwhile, the result of this research is that the shape of the Lissajous curve is strongly influenced by the magnitude of the wave number (k) or in other words the wave number (k) is the component that has a major role in forming the Lissajous curve. By illustrating the Lissajous curve illustrated using this spreadsheet program, it is expected to facilitate students in understanding the wave matter especially about the Lissajous curve with active and enthusiastic participation.
