Game for a class of up to 35 students about finding and using the nth term. This requires everyone’s focus and works best when it’s snappy. Does not need to involve all cards, but they need to be consecutive. 2 or more cards per student in smaller classes also works. Make sure to print off a copy for yourself to follow along if the class gets stuck.

This worksheet should help students notice that Sine, Cosine and Tangent are ratios in right angled triangles and that triangles with the same ratios are similar.