Students will learn how to find the point on the unit circle for a given angle. The angle may be positive or negative. Also, the angle may be greater than \(360^\circ.\)
Concude by giving your students this challenge:
Three Spinners by NRICH
Here's the solution: Start by writing down the numbers for each spinner. We know 7 of the red numbers, 8 of the blue, and 8 of the yellow. Look at the first set of unknown numbers. 3, 5, 7, 9 are not red numbers. But we know 7 of the red numbers. Thus, the first set of unknown numbers can't be red. Similarly, 5, 7, 9, are not yellow numbers. But we know 8 of the yellow numbers. Thus, the first set of unknown numbers can't be yellow either. Thus, they must be blue. The solution continues in this way.