About This Lesson
Two complete lessons with differentiated activities on discovering trig ratios; including using a table of tangent ratios (before getting used to the calculator method). There is a practical activity to try as well as a problem solving activity. (The diff
Interesting slides on introducing students to trig through investigation. Starts with working out tan ratios manually and proceeds through to definitions of all trig functions. Exercises are differentiated and include good worded problems - Promethean file has a link to Word document with answers on slide 25. Loads of stuff here so probably require some modification before use in most cases.