Desmos is a free online graphing calculator that allows users to plot functions, create interactive math simulations, and explore mathematical concepts. It is designed to be user-friendly, and allows for easy creation and sharing of graphs and activities. Desmos is widely used in education, from middle school math classes to university-level courses. Its features include real-time graphing, sliders for exploring parameters, and the ability to save and share graphs with others. Additionally, Desmos offers a collection of activities and lessons that can be used in a classroom setting or for independent study. To explore the platform, please visit their website at https://www.desmos.com/