This resource is a great exploration activity for Pre-Calc to introduce evaluating trig functions and a great transition to the Unit Circle. ASTC stands for All Students Take Calculus, or sometimes referred to as CAST. It includes the following: Discovery activity where students plot the "same" coordinate in all 4 quadrants to write all 6 trig ratios (sin, cos, tan, csc, sec, cot).This can be used as a class activity, flipped classroom, independent activity after a quiz, etc.At the end, there is