Students have a great time with this lab learning about complementary and supplementary angles as seen through the following activity using light rays!
* Students begin the activity by defining Complementary and Supplementary angles
* Students observe light traveling in straight, parallel lines through the teeth of a comb
* Students learn about angles of incidence and angles of reflection using light, the comb and a mirror.
* Students calculate the complements and supplements to the angles of incidence and reflection created by the light and record their data on the Data and Observation Chart provided in the lab..
* Students calculate the complements and supplements to the angles of incidence with the measurements presented in variables. They solve for the variables and then substitute the value of the variable into the expression to determine the measurements in degrees.
* Students observe the relationship between the angle of incidence and the angle of reflection.
* Students apply this relationship to determine the measure of the angle of incidence and the angle of reflection (also presented with variables), then they substitute the value of the variable into the expression to determine the measurements in degrees..
* Students answer a series of analysis questions regarding their findings from doing the lab.
Students love working together to complete this lab, and it is a fabulous way to reinforce the lesson on complementary and supplementary angles where variables represent angle measurements and students ultimately apply angle relationships to solve for actual measurements.