This activity allows the students to practice identifying situations where they should use either sine, cosine, or tangent to solve for the missing side or the missing angle of a right triangle. It also has "Which One Does Not Belong?" activity at the end. This activity is designed to 1) Stimulate metacognitive thinking; (2) Increase student engagement; (3) Provide Insight into student thinking; and (4) Development of a discourse community within the classroom. It is one of the 75 practical