I've been teaching trig for four years now, and with sum/difference identities, here's where the kids struggle: adding and subtracting fractions, multiplying radical expressions, and finding two numbers that add to a given angle measure. So, I created this scaffolded packet! With a partner, students work together to practice those key skills, then finally apply the sum and difference identities with the help of an embedded reference chart and a unit circle. This packet will be accessible for eve