In this activity, students will use a linked Geogebra to explore the graphs of sine and cosine functions. They will manipulate the amplitude, the period, the phase shift, and the vertical shift parameters to determine how changing those parameters in the function affects its graph. They will reflect on how the algebra of the function relates to its geometry. They will then reflect upon what they have done by coming up with an equation for the period of the functions, exploring the sine/cosine