I teach Algebra 2. My curriculum is divided up into 4 classes, each with 3 units. The students that take my Algebra 2 classes generally need the extra time to process the content. For my Trigonometry Unit, I have found that the Trigonometry Function Look-up Table is a successful tool. This table essentially takes the three basic trigonometric functions (sine, cosine and tangent) in right triangles and solves for all possible variables. Students fill in their own blank sheet (included). Discussions that follow involve identifying patterns in the table; deciding which function should be used for a specific problem; and, of course, why is this table more work than it really needs to be?